Sonic tries to get a crystal before Robotnik can use it, but is hindered when he loses his legendary speed.

Sally follows a clue that her father might be alive.

Robotnik captures Sally and makes a robot duplicate of her to spy on the Freedom Fighters.

Antoine goes after Robotnik in an irrational attempt to impress Sally and gain fame for himself.

Sonic and the Freedom Fighters travel to Robotnik's lab in hopes of deciphering his roboticizer system.

Robotnik lets loose a machine that can destroy the world.

The Freedom Fighters defend an underground city of Mobian refugees.

Robotnik has activated the Skyspy satellite to find Knothole. Sonic and Rotor work to take out the Skyspy before it's too late.

Sonic and his friends are on a quest for the Magic Scrolls, and Robotnik is on their trail.

The Freedom Fighters start disappearing while searching for magic water to save the Great Forest.

The Freedom Fighters are in need of some supplies, so Sonic and Tails head off to Robotropolis in order to find the material they need.

The Freedom Fighters hear about Dr. Robotnik's plan to capture terrapods and roboticize them for his army, so they decide to help the terrapods.

Robotnik tries to trap Sonic by holding a race in Robotropolis.

A new ally may be hiding something.

A great accomplishment could backfire on the gang.

Sonic loses his memory and is manipulated by Snively.

Sonic and Sally must travel through time to change the course of the war with Robotnik.

Sonic and Sally must clean up the mess created by their time travel.

Antoine takes the lead of a biker gang but is unaware of an important fact about the group; Sonic and Tails investigate a haunting.

After Dulcy exhibits strange behaviour, Sally discovers she's going through a "rites of passage" stage of her adolescence.

Sonic and Nicole enter a void in search of the missing Sally and Bunnie.

Sonic moves in with Antoine; a robot develops a crush on Antoine.

Sonic and friends join forces with another group to fight a war machine.

Robotnik seeks the Drood Henge scrolls, which give the location of the two powerful Deep Power Stones. Uncle Chuck warns Sally about it and Sonic and Tails find Robotnik already has one of the stones. The Freedom Fighters now have to find the second one before it's too late.

After Antoine saves Sally's life during a raid, Sonic can't stand his bragging and zips in to see Uncle Chuck, who finds out his "bug" in Robotnik's HQ is malfunctioning.

When a Pod lands in Knothole, Sonic and Sally realize the Doomsday Machine is already in operation. The Freedom Fighter groups break into the Doomsday Machine, only to find Robotnik let them in.