Following their previous encounter with Space Monster M, The Aquabats crash-land back on Earth, awakening to realize they have no memory of what happened or who they are. Hailed as heroes by the adoring public, the band starts slowly piecing together their identities. After managing to destroy a rampaging mutated Ronmark (from the episode "Night of the Cactus!"), the band find themselves overwhelmed with demands from citizens seeking their help.

The Aquabats spend the summer participating at Camp Radventures, a summer camp where kids are trained in The Aquabats' superpowers to become AquaCadets. When a group of campers is kidnapped in the middle of the night, the band realizes it's the work of a mythical shapeshifting beast, and the Commander's suspicions quickly fall upon the camp's beloved and irrepressibly perky counselor Jewel. Guest starring Leslie Hall as Camp Counselor Jewel.

After a giant mutant "flea beetle" attacks a local supermarket, The Aquabats trace it to a nearby farm growing genetically enlarged produce, which happens to be run by Jimmy the Robot's estranged parents. Tensions rise between Jimmy and his eccentric scientist father over Jimmy having abandoned his farm life, but when a gigantic mutant worm swallows Jimmy's mother, the two must work together to rescue her.

While returning home from a relaxing ski vacation, The Aquabats get trapped in a snow embankment and are forced to spend the night without power in the Battletram. In an overt parody of the 1982 film The Thing, a malicious shape-shifting alien sneaks aboard the vehicle after disposing of Jimmy to assume his form and enacts a scheme to turn the Battle Wagon into a rocket to return to his galaxy while having the human Aquabat members turned into rocket fuel. Successfully evading capture, Crash must learn to overcome his fears and rescue his pals from certain doom.

Two competing bands vow revenge on the Aquabats and join up with the sinister and mysterious Silver Skull, who transforms them into the evil AntiBats to destroy them. Meanwhile, Ricky abandons The Aquabats for newfound love and must choose between his new girlfriend and saving his friends as the mighty AntiBats close in.

Ricky's perfect Christmas is threatened when the Aquabats arrive in a strange village and are convicted of breaking a law that forbids any Yuletide celebration. Their only chance at saving themselves and Christmas is for the big man himself, Santa, to lend a mitten! Guest starring Matt Walsh and Robert Smigel.

When a gang of vicious mutant land sharks emerge from the sea to wreak havoc on land, The Aquabats join forces with the legendary Shark Fighter, a wavy-haired ocean vigilante on a self-imposed quest to fight sharks. Impressed by his potential, the Shark Fighter takes Crash under his wing to teach him the art of shark fighting, but Crash may just see more in the Shark Fighter as the big brother he's always wanted.

When the city's cutest kittens start being abducted by gigantic teleporting cat men, The Aquabats trace it back to Kitty Litter, a ferocious feline using unwilling kittens to power a gigantic cat robot as part of a scheme to cover the planet with garbage. When most of the band is kidnapped by Kitty Litter, it's up to Crash to get over his pet dander allergies and save the world from becoming a global trash heap.