Sonic and the Freedom Fighters journey to Robotnik's lab in hopes of deciphering his roboti-sizer system. While underground, Sonic spots his now roboti-sized Uncle Chuck aboard a Badlands bound mine-train and devises a plan for his rescue.
During a mission to one of Robotnik's factories, Sally is taken prisoner by Robotnik and Snively, who construct a roboti-sized "Sally" clone, complete with Sally's personality, and mannerisms. The double tricks Sonic into rescuing "Sally".
Santa Claus has made an announcement - he is retiring and has picked the perfect successor - "Robotnikclaus"! Sonic and his sister resolve to persuade Santa to return and set Christmas straight. When the two track down the Santa who made the announcement, they discover he is just a phony robot and the real Santa Claus is being held prisoner.
A homecoming is interrupted for Sonic, Sonia and Manic when Sleet and Dingo arrive to collect back taxes after returning to their birthplace.
Sonic conquers Robotnik's latest evil - a vehicle designated to locate and destroy living tissue matter - during a solo mission to the Badlands. Upon Sonic's return, the Freedom Fighters honor him with a victory party.
While on a mission to the big city to replace Nicole's malfunctioning microchip, Sonic and Sally encounter the Guardian, a mysterious cloaked figure who guards a dormant wizard named Lazar and his computer of evil spells.
Sally, Rotor, Bunnie and Antoine take off in a homemade airplane, bound for an ancient city hidden deep in the Great Mountains, while Sonic follows via his favorite transportation, his sneakers.
Sonic and the Freedom Fighters journey to Robotnik's lab in hopes of deciphering his roboti-sizer system. While underground, Sonic spots his now roboti-sized Uncle Chuck aboard a Badlands bound mine-train and devises a plan for his rescue.
During a mission to one of Robotnik's factories, Sally is taken prisoner by Robotnik and Snively, who construct a roboti-sized "Sally" clone, complete with Sally's personality, and mannerisms. The double tricks Sonic into rescuing "Sally".
Santa Claus has made an announcement - he is retiring and has picked the perfect successor - "Robotnikclaus"! Sonic and his sister resolve to persuade Santa to return and set Christmas straight. When the two track down the Santa who made the announcement, they discover he is just a phony robot and the real Santa Claus is being held prisoner.
Throbbin Screech brings a TV crew to interview Robotnik for "Lifestyles of the Sick and Twisted". Robotnik rampages through the Mobius countryside proving how sick and twisted he is, and Sonic is kept busy doing rescues. Tails decides to take on...
Lazy con-man Bo Beagle has the Choas Emerald ring stuck on his finger, and Robotnik wants it for one of his evil schemes.
Wes Weasley lures Tails, Sonic and all of their friends to a yacht under the guise of a "Hero of the Year" ceremony to thank Sonic.
When Sonic vanishes mysteriously, Tails enlists the help of a bi-plane pilot named William Le' Duc, and Professor Von Schlemmer.
Scratch and Grounder build their own robot, a naive over-grown kid called "Robot". When Robot runs off with Robotnik's new invention, the Super Planetary Implosion Module (SPIM), capable of impoding huge parts of Mobius out of existence, the race...
When an undersea world is threatened by Captain Memo and his lobster sub, Sonic spreads a rumor that Memo plans to attack Robotnik next.
Robotnik lures Sonic into a round-the-planet vehicle race called the Mobius 5000 by threatening to foreclose on a loan to an orphanage.
Santa Claus has made an announcement - he is retiring and has picked the perfect successor - "Robotnikclaus"! Sonic and his sister resolve to persuade Santa to return and set Christmas straight. When the two track down the Santa who made the announcement, they discover he is just a phony robot and the real Santa Claus is being held prisoner.
After Sonic is almost sucked inside the Void, he finds a huge Ring which Sally believes is an ancient relic but it turns out to be trick of the Sorcerer, Nagus. Sally and Bunnie are drawn inside the Void and when Sonic comes to rescue them.
Bob and the gang have got a big job on - repairing some pipework in Farmer Pickles field. / Bob, Scoop & Muck have to make repairs to a tunnel. When they arrive on site, Bob sends Muck ahead into the tunnel with a load of bricks.