When Jay discovers he's not been asked by his friends to join their band because he's not good at any instrument, he sets out to invent his own instrument which he CAN play. Meanwhile, Rekkit gets his toenails clipped, unaware that they'd turn into giant, stomping feet, which stomp on Jay's just-completed instrument.
Rekkit, trying to protect Jay from George Clart, wins an election for hall monitor at school, but quickly becomes mad with power, sending everybody to detention. It gets worse when Rekkit creates a small army of helpers (mini-Rekkits) who turn on Rekkit and throw him in detention. Now it's time for The Great Escape!
While on a visit to Chakkywood Studios, Rekkit and Jay learn that Rekkit's famous director Uncle D.W. is retiring. But when Rekkit inadvertently signs a contract to make 100 movies in one day in his uncle's stead, he, Jay, Wally, and Bean must take a lot of shortcuts to finish them, or be punished by the mean studio head.
All Jay wants to do is get a ride out to a new climbing wall on the edge of town. Too bad he's not old enough to get his driver's license. Good news is, Rekkit can get his in Chakabrak! But what should be a simple test ends up putting Rekkit and Jay behind the wheel of a crazed beast-car, chased by the Chakabrak police back to Muddlety Falls.
Tired of not having his "great ideas" listened to by anybody, Jay gets Rekkit to summon up The Hubbub Bubba, an old washtub bass who can instantly make everyone super enthusiastic about Jay's ideas with a pluck of his string. But when every idea of Jay's is met with extreme enthusiasm by the town, Jay and Rekkit need to stop the Bubba. Too bad the Bubba lives for creating hubbubs!
On a boring rainy day, Rekkit summons up a wildly-fantastical Chakabrakian fun pod. But when the pod gets hooked up to a Chakabrakian train headed for a volcano, Jay, Mom, Lorne, and Rekkit must work their way through train cars of extraordinary video game-landscapes to get to the engine and stop the train.