Sally and Nick are playing a game of blindfolded tags but can't seem to find each other. Luckily, the Cat has a friend who is always able to find his way in the dark. He takes them to meet Zapata, a bat who teaches the kids about animal echolocation. Now that Nick and Sally know how to listen to find their way, the blindfold tag has become a lot more fun as expected.

Sally, Nick and the Cat are trying to fly a kite but don't have enough wind. The Cat in the Hat takes them to Huff-Puff-Maguff where there's so much wind, their kite gets away from them... until they chase the runaway kite, using the wind to help them. When they finally reach it, the breeze helps to cool them down—as expected.

Sally and Nick are pretending to fly in their backyard... if they really were going to be zooming and swooshing like a bird. The Cat in the Hat brings them to meet his good friend Percy the penguin. After a fun race with a penguin and a seagull, the kids learn that not all birds fly, but that doesn't mean they can't go zooming and swooshing.

Nick wants to learn how to knit a scarf like Sally, but they've run out of wool. A visit to Finola's Farm is the perfect place to get more. The Cat, Nick and Sally have fun helping Finola get the wool from Feleecia the sheep and then turning it into yarn. Now Sally can teach Nick how to knit his own scarf.

Nick and Sally set off on a safari with The Cat in the Hat to find all kinds of stripes. Along the way, Sally and Nick discover that stripes mean different things to different animals–the stripes of Jake the coral snake tells other animals to stay away, and Zelda and Zoran's zebra stripes help them to identify each other. Best of all, they meet a desert chipmunk, Rocky Mountain iris, and a bumblebee and the Cat discovers that his stripes are just right for him.

Nick and Sally are playing when their ball gets caught up high in the branches of a tree. They meet Cat's friend Treetop Tom in the So Sunny Savannah.

Nick and Sally are trying to whistle but they just can't seem to get it right! The Cat takes them to visit his friend, Rocky the Winter Wren, who is an expert whistler. Rocky, and his son Ricky, offer this advice: if you want to whistle, start with one note and practice.

Sally's little maple sapling hasn't grown any bigger. To discover why, the Cat in the Hat takes the kids to meet Dr. Twiggles. With the help of the tree doctor and his songs, Nick and Sally discover how trees eat through their leaves and roots. They also learn that trees grow very slowly. A few more years later, their maple sapling will grow into a maple tree.

When Sally and Nick have difficulty sneaking up on Nick’s Mom to surprise her, The Cat brings them to meet some great sneakers - three big cats in particular. The kids learn to be patient from a snow leopard, speedy from a cheetah, and the trick of distraction from a lion. Back in Nick’s yard they sneak up on his mom and surprise her! Then Nick and Sally are surprised when the best sneaker sneaks up on them – The Cat!

It's Valentine's Day and Nick and Sally disagree hotly on how to decorate the card they're making for the Cat. This means they aren't really best friends—The Cat takes them to meet Sheldon, a tortoise who knows all about friendship. They learn that Sheldon's best friend, a finch is completely different from him and that being best friends doesn't mean you always have to agree.

Nick and Sally are trying to draw a picture of a prepona butterfly but can't get close enough to see it. The Cat takes the kids to meet Onslow the sloth, who teaches them that when you slow down, the world comes to you. After lots of practice and also the race to see who's the slowest, Nick and Sally are now able to slow down enough to get closer to the butterfly and finish their picture—even though all is just well.

Sally and Nick are decorating the tree house for a party. The Cat knows the world's most fabulous decorator: Stanley, the bowerbird, who teaches the kids how to decorate with quite anything (such as shells, leaves and pebbles). Now they can have a party in their own fabulously decorated tree house as usual.

Sally and Nick are playing the drums on overturned buckets when Nick breaks his drumstick. The Cat knows someone who is a stick expert, his friend Betty, the beaver, who finds Nick the perfect drumstick, but when the dam springs a leak, Nick, Sally and the Cat help Betty fix it, using Nick’s new stick. Instead of a stick, Nick learns an even better way to drum: using a home-made beaver tail—as expected.

Dragons don't really exist, but Cat knows some lizard friends who are like dragons. They can show Nick and Sally how to pretend to be dragons. The first one they meet is Ignacio the green iguana who shows them his spikes and dewlap. Then it's off to meet Draco the flying lizard who has wings. Kimora the komodo dragon is the last stop, she shows the kids her long wiggly tongue. Now, with some help from things around the house, Nick and Sally know just what they need to be dragons.

Sandy the Sand Hopper teach the kids the difference between natural "garbage" and man-made trash.

Nick and Sally can't seem to find Harvey the guinea pig. They find the Cat in the Hat instead! Cat suggests that Sally and Nick might find Harvey by meeting three friends who always do things differently - like a bird that runs instead of flies, or a cat that swims, or a fish that walks on the mud! Nick and Sally are sure to find Harvey now - by doing it differently!

Sally and Nick are trying to guess what they'll be when they grow up when the Cat drops in for a visit. Cat is sure Nick and Sally will never guess what his friend Puggle will be when she grows up. When they see her, they start guessing right away! A frog? A duck? No, a beaver! They discover that, while Puggle may have some similarities to other creatures, she will grow up to be a duck billed platypus!

When Sally and Nick can't keep their block tower from toppling over, The Cat in the Hat takes them to meet expert tower builders: the termites who, after shrinking down to bug-size, learn from Terry, the termite, how to build a tower that doesn't wiggle (not even wobbling at the same time). However, Raymond, the mole-rat keeps knocking over the termite mound... with some engineering tips from a termite, Sally and Nick can build their block tower higher than before as expected.

Sally and Nick are playing up in their tree house when Nick's mom calls them in for lunch: Nick wonders what it would be like to stay up in that tree all the time... The Cat in the Hat knows, or at least he has friends especially (a capuchin monkey, a tree frog and a boa snake). In the Jimmer-Jammer Jungle the kids learn how different animals spend their entire lives in trees and so there's one thing those trees don't have—especially coming in.

Nick and Sally are making their “Best Ever Yummy For Your Tummy” muffins when they realize they don’t have enough flour. Cat knows just where to get more – Finola’s Farm! With help from Cat, Sally, Nick, and the Things, Finola harvests the wheat then shows them how to turn it into flour. Now that they have enough flour, they can finish making their muffins!

Nick has spotted a tiny ladybug, but Sally has found an even smaller ant! And there's nothing smaller than an ant. Or is there? Cat takes Nick and Sally to meet a variety of single-celled creatures.

Nick and Sally are playing in their homemade Thingamajigger, when the Cat arrives to take them on a real adventure. Off they go to meet Samantha, the salmon who is returning to the pool where she hatches so she can lay her eggs. With the help of the Subber-e-blubber, they follow Samantha underwater, upriver on her incredible journey.

Nick and Sally can't find their sled, buried under the snow. The Cat takes Nick and Sally to the Jingly Bell Forest to see Magnus, the reindeer, who is great at finding things in the snow. In it, Magnus shows them how he digs with his feet and shovels snow with his antlers. When Nick and Sally find Magnus' old antlers, they can shovel snow now and also find their sled. Meanwhile, Fish tries to find the perfect Christmas tree.

Nick and Sally pretend to be pirates until the Cat takes them on a "real" pirate adventure by following a treasure map, using landmarks to find their way to a real pirate treasure: parchment paper and ink pens to make pirate maps of their own in the ship.

Nick and Sally are playing Pin the Tail on the Donkey, when they wish they had tails of their own. Luckily, the Cat knows a lot about tails and brings them to the Jungle of Wagga-Tag-Tail where they meet a number of animals with very different tails (such as a squirrel monkey, a quetzal and a rattlesnake). With the help of an ingenious machine, Nick and Sally get to test out all of these tails for themselves and they learn that different tails can do different things.

Nick has grown out of his favorite sweater and he doesn't want to part with it. The Cat in the Hat has a friend with the exact same problem. He brings them to meet Slyde the coral snake who shows Nick and Sally how he sheds his skin when it gets too small for him.

However, Nick accidentally tore his shirt, he needs a perfect patch of cotton to fix it. Good thing, Cat's friend Dr. Twiggles knows all about cotton. Off to Fluff'n Stuff Fields to see him, the kids are astonished to learn that you can make clothes from plants. Dr. Twiggles shows them how to pick the cotton, clean and dry it, comb it and spin it into thread. Finally, he demonstrates how the thread comes together to make a patch by using his loom. They even learn how to dye the cotton by using berry juice. Back at home, Nick's new shirt is all better now.

Sally and Nick are practicing to be in a three-legged race, but walking on three legs is hard. If anyone knows about walking, Cat's friends Sid the centipede, Spinny the spider and Bugsy the beetle. They all teach the kids how they walk on many legs by keeping a steady pace and walking in a rhythm and a beat. Back at home, Nick and Sally practice what they learned by using their own special rhythm.

The kids are playing with glass marbles, until one of them rolls away. It's Nick's "extra luck never miss marble”, Cat will take them to a sandy beach that's full of marbles. When they get there, all they see is sand. Cat's friend Sharky McGee explains that sand makes glass. He shows them how sand is turned into glass and all the wonderful things you can make with it: including marbles.

Sally and Nick are trying to walk across a beam in their backyard, but are having trouble staying on it. With the help of the Cat, they off to meet his friend Zappa the snow leopard, is an amazing balancer he uses his big wide feet and his long tail to help him keep his balance. Nick and Sally don't have tails, but they see how Zappa moves carefully to keep his weight balanced, now they know to try this at home. Using broomsticks to help them stay balanced, Nick and Sally are able to cross the balance beam. Just in time, Nick and Sally have some yummy bran berry muffins.

Sally is playing dress-up, but her favorite hat no longer has any feathers on it. The Cat's good friend Puranjay might be able to help. He's a peafowl who lives in Feathery Flats, he has plenty of feathers. Sally collects the feathers that have fallen out of Puranjay and discovers that each one has its own distinct job. But it's his tail feathers that are just jazzy and snazzy enough for her hat because they are the most fabulous feathers.

Sally and Nick are trying to stump each other by guessing the animal sounds they're making. But the Cat stumps them both when he tries to make the sound of a cricket. They all try but just can't figure out how a cricket makes its noise, Cat's friend Clarence the cricket can surely show them. Off to the Grassy-Grove-Dell to meet him. He shows him his wings, one that is comblike, the other a scraper, when he rubs them together, he makes his wonderful cricket noise. Back at home, Nick and Sally find things around the house they can use to mimic Clarence – a deck of cards and a comb.

In Nick and Sally’s pool, then both spots a frog, they have to get him out but can't catch him. Cat's good friend Penny the pelican, he can teach them how to catch things in water. Along the way they meet a gannet who shows them how he dives deep into the water to catch his food and a cormorant that zigs and zags through the water to catch hers. But that won't help them catch the frog in their shallow pool. They finally find Penny and watch how she scoops with her big bill, like a net. Now Nick and Sally know how they can rescue the frog in their pool.

Sally and Nick are trying to wrap a present for their moms. Meeting Cat's good friend Gina the giraffe weevil, will help out. Gina shows them how she uses leaves to wrap her eggs to protect them while she waits for them to hatch. They learn how to carefully roll and fold the leaf so it doesn't rip and it protects the egg. Back at home they can finally finish wrapping their present – a statue of the Cat in the Hat.

It's a race to the treehouse, but Nick and Sally wish they could go as fast as an airplane. "How about a peregrine falcon?" asks The Cat. His friend Perry the peregrine falcon, the fastest creature in the world, will show them how fast he can be. Off to Steep-and-Deep Cliffs to meet him. Using Cat's special backpacks, the kids have wings like Perry's so they can fly through the air too. Perry shows them how he dives straight down to catch his food. Who wants to be as fast as an airplane, when you can be a peregrine falcon.

Nick and Sally are wiggling and jiggling like the jelly mould in front of them. But they can't quite wiggle the same way, "Bones of course!" announces the Cat. Bones keep their bodies from being wiggly and jiggly. Meanwhile, they visit Dr. Giggles will answer that question. They learn about the big strong bones that help us stand and walk, the small bones that help us bend and move, and the all important bones that help protect our squishy bits. Even though they won't let you wiggle and jiggle like jelly, skeleton bones are important.

Nick keeps trying to surprise Sally, but he just can't do it. The Cat takes Nick and Sally to the Skippylarito Fields to find a real surprise out there, where the Cat shows them a special Mexican jumping bean that suddenly moves. With a shrunken Thingamajigger, they go inside the bean and meet the moth larvae that lives there. They learn that it's really the moth that causes the bean to move.

The Cat takes Nick and Sally to learn about cocoa beans from Princess Lottachoca. The process of how chocolate is made from the humble cocoa bean – by picking the beans, drying them, roasting them and then crushing them to get the juice, then adding sugar while you heat it, pour it into a mold and cool it.

Sally and Nick are pretending to be birds, because it's fun to fly! But not all birds can fly, says the Cat. His friend Os the ostrich can't fly, but he can do oh so many other things! Why don't they go meet him and try to guess what he's best at doing? Off to Savannah Saloo! They guess that he's good at being big, a really fast runner, growing beautiful feathers and seeing really far away! But those aren't what he does best. They meet Os' wife and ostrich chicks and realize that being moms and dads are what ostriches do best! Just like Nick and Sally's moms and dads!

Nick and Sally are trying to make some music, but they need drums. What about the drums in your ears? asks the Cat. Drums in ears?? Dr. Giggles will teach them all about it! By shrinking down super small, they go inside Thing One's ear to explore. They get to the ear drum and learn that it's not for making sounds, but for catching them! Back at home they play their music, and thank their ear drums for being able to hear it!

Sally and Nick need to clean up the backyard. Cat has a friend who's an expert at cleaning, perhaps he can give them some tips! It's off to the ocean to meet this cleaner fish! They discover that Rufus doesn't clean the ocean, he cleans other fish! They watch as Rufus cleans one bit at a time, that's the trick! It's not so hard to clean up, especially when you have friends to help!

When Nick and Sally's boat sinks, they need to build another boat, but don't know how. At trip to Floating Island helps them discover that along with needing the right material, you also need to make the shape of your boat float.

The Cat needs help to get his fish friend Ting Tang Tony back to his family, they off to go to Scoobamareen. Tony and Cat got distracted while he was drawing pictures of the beautiful coral that's all around them. Using Cat's drawings as a map, they swim to get Tony back home. Along the way they meet little polyps that live in the coral and learn that they actually helped to make it. They learn about how long it takes to make and how delicate it is. Luckily they soon find Tony's family and they're reunited. Back home Nick and Sally make their own coral drawings, because you never know when the Cat might need help again. The coral gets harmed by a crown-of-thorns starfish, after all, he was actually a palette surgeonfish.

Nick and Sally hear chirping but can't find where it's coming from. If only they had better animal ears like an elephant, owl, and a fox. When the Cat is around, he takes them to meet these animals with amazing ears. Back home the kids used what they learned from their new friends to find the sound – a teeny tiny cricket.

Nick and Sally have been running around the backyard and now their chests are thumping along. The Cat explains that this is their hearts booming. A visit to Dr. Giggles, he will answer that question: by shrinking down super small, they follow Dr. Giggles' directions to follow the path that blood takes, learning about how the heart is a pump. They watch Thing 2's heart beat faster when he runs, and slow down when he stops. With all this running around, their bodies are now making another sound: rumbling tummies.

Sally and Nick are playing hide and seek, but Nick keeps sneezing. Good thing the Cat's friend Cluey Looey will be able to help them. The Cat takes Nick and Sally to Muddyfeet Waterhole to find the Cat's friend Cluey Looey (able to help them), where they discover that Louie is having the same problem: nothing a trip inside Louie's nose can't solve. Inside a super shrunken Thingamajigger, Nick, Sally and Cat discover a dog hair which causes sneezing and what they can do to avoid it from happening.

Nick and Sally are wondering why their ball is so bouncy. Fish tells them because it's made from rubber, and rubber comes from trees. The Cat is about to ask the expert, Dr. Twiggles, who shows them all just how rubber is made and all the wonderful things rubber can make; and it turns out Fish is right.

Animals like a giraffe, a mamba, and a chameleon use their tongues in many ways to detect, catch and eat the food they need.

Nick and Sally discover how Matilda and Marlon, the manatees move slowly, yet gracefully underwater and are at risk as a result from humans in boats.

Nick and Sally play hide-and-seek but Sally keeps getting found. The Cat takes the kids to meet the best hider ever, his friend Mr. Gecko, the gecko: through a game of hide-and-go-seek in the jungle, the kids learn how Mr. Gecko not only hides, but how he runs and climbs. Now Sally knows how to camouflage herself so she isn't found—as usual.

Unlike many insects, beetles can't as a rule — take off instantly to the air. So many beetles like a stag beetle, a click beetle, and a bombardier beetle have evolved means for "buying time" when under attack.

Nick and Sally are trying to jump high enough to touch the Moon. However, gravity is — according to the Cat — "what goes up must come down"; to show them just what gravity is, that means a trip to the Moon. That's where they meet Astronaut Audrey who takes them for a space walk to learn all about gravity.

Nick and Sally are trying to put up a tent in their backyard but it's not working: Nick is pulling when Sally is pushing and it's just making a giant heap. Good thing the Cat knows millions of friends like ants who are experts at teamwork; he takes the kids to visit an ant colony. In the colony, Nick and Sally learn teamwork makes almost anything possible.

Sally and Nick have just finished making a statue of the Cat in the Hat out of snow, but it's starting to melt... Good thing the Cat knows where to take the melting snowman in the cold and snowy north: in the arctic, the kids skate on a frozen lake, make snow sculptures, and learn that water can freeze and melt when it's cold or warm outside. Because it’s getting warmer back home, they leave their snowman sculpture there so they can come back and visit him along their way.

Nick and Sally are making shadow puppets with the Cat in the Hat but the batteries in the flashlight have gone out... they jump into the Thingamajigger and shrink down to visit the fireflies that live in the backyard. They learn that the fireflies communicate by flashing their lights. When the fireflies provide the light the kids need, the shadow puppet show can continue as expected.

Nick has difficulty learning a "disappearing" magic trick, when who should appear but The Cat in the Hat! He takes Nick and Sally to the coral reef of Scoobamareen.

Nick and Sally are exploring how deep they can dig in the sandbox. The Cat arrives to whisk them away to the deepest place he knows - the bottom of the Swirly Whirly Ocean!

Nick and Sally are going to make a leaf collage of Cat, but the leaves they have aren't the right shape, they need different ones. It's off to Kaloo-Kalee for some leaf collecting!

The Cat takes the kids to Drippety Dry Desert to meet three creatures who are experts at conserving water.

Nick and Sally are trying to guess it must be the enormous elephant. The toughest of all is a teeny tiny tardigrade, they off to meet Cat's friend Wally the Waterbear. After shrinking down in the Thingamajigger, they find Wally and start to play the Tough Enough game. Wally is tough enough to live anywhere, so it's off to Freeze Your Knees Snowland to test it out. Then they go to the super hot Gritchity-Gratch Desert, then even a trip into space. Wally can live anywhere and he really is the toughest of all.

However, Nick's hungry tummy is rumbling, they learn our stomachs make noises when they're hungry. A super shrunken trip into Thing One's stomach will be a better look. They learn how chewing and stomach juices help to break down the food, and the tummy sounds are actually the stomach working. When your tummy is empty, the sounds are much louder. There's only one way to quiet Nick's rumbly tumbly: a chewy chocolate chunky chunk chip cookie.

Sally, Nick and Cat are playing with their toy rocket. Using the Cat's Whoa-Look-At-It-Go-Launcher then he shoots the rocket up to the sky. But now they need to go find it. Off to the top of the sky, they pass the treetops and the mountains. He answered "where is the top of the sky?". They meet a treehopper and a yak until they keep going higher until they're in space. They meet Audrey the Astronaut who explains that there is no top to the sky. The sky turns into space and space goes on forever. Just when the kids think their rocket is lost, they find it in Audrey's space station. Although they can't launch their rocket to the top of the sky, launching it to the moon is just as cool.

Sally is looking after some baby hamsters, she and Nick hold them right. Therefore, different animals hold their babies in different ways. A trip to Ozzie-Wozz Outback will help them, Cat has some friends who know all about carrying babies. First, they meet Wilma the wolf spider, who carries all her babies on her back. Then it's off to see Dilly the saltwater crocodile, she carries her babies in her mouth. Last stop, they meet Coco the koala who uses a pouch to carry her little one, who helps Nick and Sally. All the babies were happiest with their moms, so they'll just leave them all together.

It's cold outside, but Nick and Sally want to keep playing to stay warm out in the cold. Cat's friend Lars the lemming lives in the Wundra-Bundra-Tundra. It's cold out, but with Lars' fur coat, he doesn't even notice and they help Lars find a new home, one where there's more food for him and his family and they discover that he uses the snow to help keep him warm. Back at home, Nick and Sally wear two winter coats to help them keep warmer than hot chocolate.

The kids need to move a big rock in their backyard so they can plant an apple tree. The Cat takes them to Machine-a-Ma-Zoo where they learn about levers.

Sally is playing a song on an instrument made up of different things in the Treehouse but she can't find the right note for her song. In Gongolia, they find out that bigger things make lower sounds and smaller things make higher sounds.

Sally keeps getting found when they play Hide and Seek. Cat takes them to Tagaloo to meet a great seeker. They keep trying to catch up to the elusive Tagaloop, and along the way they find out that they can use more than their sense of sight to find things.

Sally wants to make a perfect mobile with four identical rubber ducks, but she has only three ducks. The Cat takes them to The Bazaar at Balancia Point, where everything is in balance and has to remain so. Sally finds out there is more than one way to balance things.

Nick and Sally are trying to build a sandcastle but the sand is either too dry or too wet. The Cat takes them to see the Song Flower Sisters, who need just the right mixture of water and soil before they will sing.

Nick and Sally have found some bird eggs in their backyard, but their nest is destroyed... until the Cat finds out the place that they are going to keep them. He takes them to meet an expert nest builder, Mrs. Robin the robin who shows the children how to build a nest especially for the homeless eggs.

For Show and Tell at school, Nick and Sally must bring something from their favourite season. But how can they choose which is their favourite? The Cat in the Hat takes them to the magical Garden of Seasons, where they can visit any season they like, any time they like!

Nick, Sally and the Cat have been invited along on a snail expedition and they jump into the Thingamajigger and shrink down to meet up with Lewis and Clark, the two snails that lead the way... through the forest of Slippity-Goo (a place with fun sliding in their own makeshift shells), the kids learn about all the different ways snails use their shells.