Titre original : Roboticus
Robbie Rotten is tired of Sportacus always saving everyone. When he finds a rule in the LazyTown Rule Book that allows only one SuperHero in town, he hatches a plan to drive Sportacus away by introducing a faster, stronger SuperHero robot.
After Sportacus loses a challenge, he has no choice but to obey the rules and leave LazyTown. But Roboticus reveals his true rotten nature, and the LazyTown Kids must challenge him to a race to win Sportacus back.
When the robot is caught cheating, the Kids enlist Sportacus‘s help. Will they win the race and send the rotten robot out of LazyTown?