Gruffi burns the Great Book of Gummis and goes to Ursalia to find another to replace it. Their he meets Thornberry, a gummi who tries to save Ursalia from an evil witch, Lady Bane!!

Tummi builds a full size boat, which Gruffi wants scuttled. However, out of respect for all the work done, he allows Tummi one sailing trip. This trip takes an unexpected turn when they end up on a volcanic island inhabited only by another Gummi Bear - an artist by the name of Gusto.

Calvin meets the Gummi Bears and asks if they will help stop Duke Igthorn from destroying Castle Dunwyn.

Tummi learns through his new friend, the blind shepherd Trina, that handicapped people are not helpless.

The Gummies find a Gummiscope, a gigantic machine that harnesses sunlight as a means of long-range communication, that could allow them to make contact with the Great Gummis across the ocean – but it can also be used as a weapon, causing Duke Igthorn to use it as a laser-type weapon to force King Gregor into surrender.

After an autumn of hard work and preparation for the coming winter, the Gummis are looking forward to the holiday of Fall's Farewell, but Sunni goes overboard with the celebration trying to impress Calla.

Zummi finds a section of the Great Book of Gummi that contains advanced magic spells. However, this also signals Zorlok, an evil wizard whom the Great Gummis had imprisoned in a subterranean prison, that he can find the unlocking spell, then be free to inflict violence on all Gummi Bears the world over, then conquer the world. To do this, Zorlok creates a monster to steal the Great Book, causing Zummi, Grammi and Gruffi needing to track it down.

Igthorn comes into the possession of an invincible magical suit armor of an infamous villain from the past. Unfortunately, this armor fits diminutive Toadie only, and once the dwarfish Ogre realizes its power, he simply decides to take his Dukie's place as the ruler of Dunwyn!

After the egg of a griffin rolls free, Cubbi gets mistaken for the baby whilst Gruffi has to deal with the actual baby griffin who thinks he is his father. Can Gruffi and Cubbi make the switch without facing the wrath of the mother griffin?

Tummi accidently causes a swarm of bugs to attack the gummiberry bushes.

The Gummis are nearly out of Gummiberry juice so Grammi needs to make more, but the spigot is stuck so Zummi, Grammi, Cubbi, and Cavin go to the pumping station to fix the problem. But they discover that the facility is near a maritime boundary that separates Dunwyn and Drekmore – where Duke Igthorn and his ogres live. They only have four bottles of Gummiberry juice left, that's one for each of them. Can they fix the problem and get back home safely to Gummi Glen without being noticed by the ogres?

Duke Igthorn catapults Toadie into the forest, where he accidentally makes his way into Gummi Glen and begins snooping around. When Tummi, who has been caught eating the other bears' picnic lunches and lying about it, sees him, no one believes him when he tries to tell them.

Duke Igthorn meets Lady Bane for the first time and falls in love.

Gruffi & Grammi switch job places. Igthorn makes a machine to destroy Castle Dunwyn.

A sculptor changes all the Gummies except for Gruffi and Grammi into statues with magic dust. Meanwhile, Gruffi and Grammi are frequently fighting and don't want to work together. King Gregor then buys the statues for Princess Calla. So it's up to Gruffi, Grammi and Cavin to turn the others back to normal. Can they do it, or will Gruffi and Grammi's arguing get in the way?

With no sign of Igthorn for an entire year, not even in his own castle, Zummi Gummi finds this news as a perfect opportunity to call on the Great Gummies (much to the skepticism of Gruffi). However, Igthorn has recently devised the ultimate plan to finally capture the Gummies, obtain the Gummiberry juice, and take over Dunwyn.

When Lady Bane gets a lock of Sunni's hair, she uses it as part of a spell to keep her eternally young. Unfortunately, the spell also ages Sunni from a young Gummi to an old Gummi.

Grammi finds what seems to be a Gummi forced to work as a side show and takes him home to Gummi Glen, but Gruffi thinks there is something wrong with him. Are Gruffi's suspicions correct, or have they found another Gummi Bear?

The Trolls are on the loose again, and this time they've hijacked an ancient Gummi digging machine.

When the castle of the knights of Gummadoon appears, Cavin is imprisoned as a spy. The Gummies only have until sunset to rescue him, as the castle only appears once every hundred years, but they also have to contend with Duke Igthorn, who plans to capture the castle.

While exploring an ancient storeroom of the Great Gummis, Tummi discovers a mechanical decoy used to make dragon footprints, but accidentally starts the ignition on the machine and begins bouncing all across the land. The footprints attract a real dragon who proves to be different from the stereotype of large dragons. The knights of Dunwyn also see the machine and think it is a real dragon.

When Cubbi claims he is serious about Calla's knighthood from "Up, Up & Away", the annoyed Gummis suggest he go into the forest to be a hero. After saving some people, Cubbi gets the reputation as "the Crimson Avenger". Although Cubbi has done a good job by protecting people from a highwayman trying to rob them, the thief elects to move into Dunwyn Castle - along with chances for juicier crimes, which end up causing problems for Calla, Cavin and King Gregor.

Lured by the aroma of their daily baking, Tummi ends up in the company of human monks, is forced to protect the faithful friars from the thieving trolls, and finally learns to say no for his own good.

Sunni creates a growing potion while Toadie is cast out by Duke Igthorn. The two meet to unexpected results.

Grammi and Gruffi decide to trade their usual chores to find out who has the easier job. Meanwhile, Toadie and Igthorn discover blueprints for an ancient Gummi Bear logging machine, but needs a Gummi to build it for him, leading to another hunt for the bears.

Sunni saves a squirrel-like shapechanger called a boggle, from a hungry wolf and takes it back home. But a shape-changer - not to mention a whole family of them - tends to make a rather tedious pet!

Eager to meet the Barbics, Cavin accompanies the Gummis on a trip to Ursalia. He is at first not welcomed by the Barbics, but soon gets the chance to prove himself in a manhood ritual which Buddy has to undergo in order to become a full member of his tribe. However, a pair of satyr poachers are on the prowl looking for furs to line their purses – and the Gummis just so happen to be quite hairy ...

Igthorn purchases a love potion from a traveling gypsy to get Lady Bane around. But a severe accident instead makes Lady Bane fall in love with Toadie, and Tummi in love with Lady Bane!

The Gummies try to sweeten Gruffi's sour disposition by magic, but the conditions of the spell they use turn this affair into a two-edged sword.

Sunni finds an old enchanted Gummi quilt which records the old Gummis' greatest achievements on its patches. In her eagerness to show it to Calla, she loses the quilt to Lady Bane, who promptly employs its magic to try and make herself queen of Dunwyn.

Toadie impersonates the Crimson Avenger and learns what it means to be a hero.

When Gruffi breaks his foot, he stubbornly refuses to stay put, believing that the Glen would suffer if he doesn't remain active. His attitude doesn't improve when a rowdy bandit gang decides to make camp--right above the Gummi Glen abode.

Grammi tries to become a better cook and collects a number of strange roots for seasoning. Unfortunately, a trio of gnomes needs these roots to appease an everhungry, bullying monster, and Grammi decides to give that monster a taste of her house-made cooking.

Sir Gawain (Cavin's grandpa) tries to prove Gummies exist to win a bet.

Tummi fights a battle with his own self control when Duke Igthorn temps him with food.

King Gregor and Calla travel to the realm of King Jean-Claude and his daughter Marie to discuss an alliance against a fiendish villain, Marquis de Bouillabaisse, and Sunni, Cubbi and Tummi decide to hike along. However, once more Calla and Marie initiate a competitive quarrel, which leads them right into the arms of Bouillabaisse.

King Gregor proposes a series of tests for Unwin and the other squires to become Princess Calla's bodyguard, which includes stealing a golden apple from the strong and mysterious Black Knight. Calla conceals her appearance in a suit of armor and competes as well to prove she is capable of her own self defense.

Grammi is visited by a childhood friend, Nogum.

Tummi takes pity on Doctor Dexter, an unsuccessfull pharmacist, and decides to improve his concocctions with a shot of Gummiberry juice. Unfortunately, this new wonder medicine also attracts the attention of Igthorn, and without the knowledge of how to exactly replicate the formula, the Doctor is caught between a rock and a hard place.

Gruffi's head swells when Trolls complicate the delivery of a tree.

In his clumsiness, Sir Thornberry inadvertently releases the Spinster, an old menace of the Gummi Bears, and now he is his friends' best hope of escaping this monster before it makes dinner out of them.

Sunni learns the importance of keeping Gummi traditions when a giant reawakens thanks to her carelessness.

Despite Gruffi's objections, Cubbi finds a wolf cub and raises it.

Sunni wants to find a new place to live but finds that Gummi Glen is the best home for a Gummi Bear.

A bird threatens the Gummiberry bushes and nobody will listen to Cubbi's ideas to get rid of it.

King Gregor hosts King Jean-Claude, a ruler of a nearby Frankish kingdom, and his daughter Marie in order to improve diplomatic relations; but both Sunni and Calla learn that being a princess does not make one an instant sweet little girl. Even worse, Marie's haughty attitude eventually causes King Jean-Claude to stage a military siege on Dunwyn.

Tummi, Sunni, and Cubbi learn the secret recipe for their favorite sweet treat but run into trouble when they try to make it themselves.

When Gusto invents a decoy to lure ogres away from Gummi Glen, it fools the ogres, but also attracts the humans, who start looking around the forest. It is up to Gruffi and Gusto to save the glen.

Grammi and Tummi go to feed a flock of giant birds just returning from their winter quarters, only to be forced to protect them from Igthorn hunting these birds to use them as war steeds and take care of one of their young at the same time!

Dunwyn's most famous paladin, Sir Victor, pays a visit to King Gregor's court. But the White Knight bears a secret which makes him an easy target for extortion by Igthorn.

Igthorn and Tummi switch bodies on Tummi's birthday.

Tummi has to clean up a big mess in Gummi Glen and bemoans that he is slow at the job. After tricking a tired Zummi into casting a spell on him, he learns that faster is not always more efficient when the spell proves unpredictable.

Cavin becomes a great painter with a LOT of help from Gusto.

Duke Igthorn gets a magic bagpipe that hypnotizes whoever hears its music.

A traveler from the Orient searches out the Gummi Bears to honor an ancient pact of friendship and help concerning a dragon.

Sunni enters a costume contest in Dunwyn during folly day.

Grammi believes it is time to teach another Gummi Bear how to make Gummiberry juice. Sunni is chosen as the most eligible candidate, but is more into fashion and spending time with Calla. The Ogres kidnap Grammi and take her to Castle Drekmore, where Duke Igthorn attempts to coax the recipe for Gummiberry juice from her. When the Gummis go on a rescue mission, they request Sunni to follow and bring some Gummiberry juice, which Sunni does not know how to make because she failed to pay attention to Grammi's lessons.

While trying to find out why winter is still persisting in Dunwyn alone, Sunni, Tummi and Cubbi encounter a frost giant named Chillbeard who uses a "wind horn" to freeze everything. The cubs wonder why Chillbeard seems immature for the "Lord of Winter", wanting to play games instead of allowing spring to start.