While taking a break from the rigors of high school life, three friends cause a lab accident that results in them gaining incredible superpowers.

When Jake, Nathan and Ricardo are captured by Kane and Rook, instead of being punished, their lives are changed in unimaginable ways.

As they adjust to their new powers, the Flex Fighters encounter a mysterious ninja trying to take down Rook and Charter City.

When computer hacker Circuit-Stream develops powers to pass through solid objects, it's up to the Flex Fighters to stop him from taking over the city.

While Stretch and the Flex Fighters try to work out their issues, a mysterious villain schemes to take over Rook's latest creation, the Stretchipedes.

The Flex Fighters and Kane must confront former gangster Jack Kinland, who has taken over the criminal underworld with the help of Stretch Monster.

Quick Charge, a scientist with the ability to skate on electricity, sabotages the city's electric grid in order to carry out revenge on Rook.

The Flex Fighters must race against Blindstrike to the location of Dr. C's downed plane, where secrets of the dangerous Hyper-Flexarium reside.

Stretch's odds of attending the school dance are slim when his powers go haywire after criminals Brick and Mortar hit him with an unknown weapon.

When the mysterious Tech Men take the museum hostage, Stretch and the Flex Fighters must find a way to stop them without revealing their identities.

To discover the identity of Blindstrike, Stretch and the Flex Fighters work together with an unlikely ally to locate Dr. C’s secret base.

Stretch and the Flex Fighters race against Stretch Monster to secure a mysterious and dangerous chemical held by Blindstrike.

With Stretch Monster’s sinister plan finally revealed, Stretch and the Flex Fighters must stop his Flexarium Army from taking over the world.

Now branded as traitors by their own city, the Flex Fighters team up with Dr. C and Blindstrike to work without the support of Rook Unlimited.