In a world where monster wrestling is a global sport and monsters are superstar athletes, teenage Winnie seeks to follow in her father's footsteps by coaching a loveable underdog monster into a champion.

Swackhammer, owner of the amusement park planet Moron Mountain is desperate get new attractions and he decides that the Looney Tune characters would be perfect. He sends his diminutive underlings to get them to him, whether Bugs Bunny and Co. want to go or not. Well armed for their size, Bugs Bunny is forced to trick them into agreeing to a competition to determine their freedom. Taking advantage of their puny and stubby legged foes, the gang selects basketball for the surest chance of winning....