The giant seed finally reaches the final stage of its metamorphosis, and Cosmo steps in the battle to stop it.

Shadow invades the Blue Typhoon, trying to kill Cosmo for reasons unknown.

The president, although happy Dr. Eggman's base is destroyed, is worried about his upcoming election, so he decides to use Sonic to boost his image.

After the galaxy is saved, Sonic and his friends recalls memorable moments and anticipate their future.

Sonic must save Tails from a tailspin.

Dr. Eggman provokes Sonic into accepting a challenge by the leader of the S-Team.

Under a new alliance, Shadow, Rouge, and Eggman carry out their latest plan. As Eggman launches an attack on Prison Island, Rouge breaks in to steal three Chaos Emeralds, and Shadow sneaks in to plant a bomb which will destroy the island.

As the clock ticks for Space Colony Arc's crash, Sonic, Eggman, Bokkun, Dekkun, Knuckles, Tails, and Rouge try to get the Master Emerald to the power source, The Chaos emeralds. Meanwhile, Shadow is faced by Chris, who reminds him of Maria's Wish, to help Mankind. As Sonic, Knuckles and the two robots reach the power source, a recreated temple of Chaos, a robot/organic beast attacks the crew, thinking of a way past, Shadow offers to distract the beast long enough to stop the colony. Will they succeed? Watch and find out!

Sonic tries to relax aboard a cruise ship, then learns he will have to save it from an iceberg.

The Chaotix Detectives made up of Vector the Crocodile, Espio the Chameleon, and Charmy the Bee have arrived in Station Square. Their goal is to find Cream for a specific reason, even when they think Sonic stole her. Meanwhile, Dr. Eggman rebuilds half the moon (after part of it was destroyed last episode) into the Eggmoon and claiming to Sonic that he has become reformed. Is this true? And will the others know why the Chaotix Detectives have come for Cream.

The fight tournament draws to a close with Emerl being the winner. However, Emerl starts going beserk after holding the Chaos Emerald and begins to destroy everything in his path. When Amy, Sonic, Knuckles, Tails, and Rouge are unable to stop it, Cream shows up to confront her robotic friend. Will she be able to talk Emerl into ceasing his uncontrollable mayhem, or will she have no choice but to fight and shut him down?

Sonic, Chris, Tails and the Egg Fort crash-land on the Nature continent.

Sonic and the others see through Eggman's trick.

Cosmo reveals the mission of the Metarex.

The president's office tries to lure Sonic and the gang into a trap with a Chaos Emerald.

While traveling through space, Dr. Eggman and his forces come across a group of humans battling the armada of Pale Bay Leaf.

Sonic and the gang find out that Mr. Thorndike has unknowingly bought a ring containing a Chaos Emerald.

Vector comes up with a scheme to play match maker for Cosmo and Tails.

Chuck finds a way to teleport material objects to Sonic's world, and Vanilla asks the Chaotix to help wend them to Chris.

Eggman spots Chris and company while they are looking for Cheese.

Sonic and the gang face off against eerie ghosts released by a careless cameraman.

Sonic and the others chase after Dark Oak to galactic coordinates 0-0-0, where a thousand-year prophecy will bring their plan to fruition.

Sonic and his friends try to return to their home planet before time freezes.

When an eclipse from the newly-repaired moon blocks the sun, Station Square faces a risk of panic. Eggman steps in and creates an artificial sunlight orb to provide light through out the city. It seems like Eggman is truly doing some good. Unfortunately, Sonic dosen't think so...

As they travel through the Intergalactic Cloister, Sonic and the others battle Yellow Zelkova.

Chuck suspects Sonic and the others will be able to go back to where they came from by using the power of the Chaos Emerald.

As Knuckles blames himself for not being able to guard the Master Emerald, Sonic and Tails take off in the X Tornado to save Amy from the Egg Carrier.

Knuckles has a mysterious vision about a girl named Tikal; Sonic and Tails have their Emeralds stolen.

Sonic and Dr. Eggman fight to possess the seventh Chaos Emerald.

After the success of the sunshine balls, Eggman then tries to execute the rest of his plan. Sonic explains how Eggman eggmoon is moving to block, meaning Eggman set up the eggmoon as part of his master plan. Eggman then captures the president, and as he starts to make his own money, Sonic and Tails crash the X-Tornado into the white house and explain what happen while Mr. Tanaka and Topaz move the eggmoon out of the suns path. Sonic then set up a trivia challenge and traps Eggman by hitting him on the head with a big metal pan, and Eggman is sent to jail.

Tails and Sonic try to rescue Amy and Lily from Eggman.

A new destructive vision is revealed to Sonic; Chaos starts a devastating flood in Station Square.

Chris attempts to shelter Sonic in his room.

Dr. Eggman's Egg Fort rises from the ashes of his base to wreak havoc on Sonic and the town.

Dr. Eggman sends a robot to Chris' elementary class, hoping to brainwash the children and help his goal of world domination.

Chris' teacher, Mr. Steward, makes an unexpected visit.

Sonic, Tails, Knuckles, Amy and Tanaka have arrived at the ARK, but when Robotnik, Rouge and Shadow programme the ARK on a path to oblivion, it's Sonic The Hedgehog to the rescue in outer space!

As Nelson tries to maintain the faltering Thorndyke Industries due to his employees joining the Freedom Movement to emulate Sonic's carefree lifestyle, kitchen appliances begin to cause havoc around town.

Dr. Eggman's phony tears deceive Knuckles.

With Eggman under the Volcano Sonic, Rouge, Knuckles, Tails and Chris follow him. But is there something hidden from the world there?

Sonic and the gang play Dr. Eggman and his henchmen in a game of baseball, where the winner gets a Chaos Emerald.

Sonic, Tails, Knuckles & Amy manage to break into Eggman's base, undetected. At least they THINK they've entered undetected. Bokkun finds them & calls on the Egg Golem! They board the space shuttle, but their adventure has just begun...

Sonic is captured by the Metarex.

Amy and Knuckles hide in a sewer while fleeing from the authorities.

Chris, Cream and Cheese meet the Eggman's newest fiend.

Sonic tries to stop Eggman from taking over a resort.