Sonic X

After Eggman tricks Knuckles into blaming Sonic for being stuck in the human world, Knuckles challenges Sonic to a duel allowing Eggman to capture Chris, Amy and Tails using E-47, until Knuckles realized he'd been duped and teams up with Sonic to destroy the robot and save the others.

Eggman tries to use his robot to brainwash Chris' class but when Intellihente winds up teaching more than brainwashing, Eggman steps in to put the children in permanent detention until a worried Sonic arrives, destroys the robot and saves the class.

When Mr. Stewart drops by for a surprise visit, Chris and Chuck are able to keep Sonic and Friends' stay a secret but after the S-Team Leader, Chris' uncle, arrives things get messier and everyone including Ella and Mr. Tanaka find out Chris' secret.

After Eggman discovers that he is being watched by the military he sends E-90 to swallow the satellite, but this disrupts all television so Chuck and Tails turn Tornado into Tornado X allowing Sonic to enter space and destroy E-90

After Chris, Amy, Cream and Cheese arrive at a resort, Eggman appears and tries to take over but Sonic arrives and tries to stop him only to be saved by Amy from E-39.

Chris finds himself depressed at the prospect of his friends returning to their home world despite knowing that that is what's best for them. Knuckles meanwhile attempts to orchestrate a truce between Sonic and Eggman so that they may all return home.