Stephanie comes to LazyTown and meets a zany mix of townspeople, including the world's laziest super-villain, Robbie Rotten. Fortunately for Stephanie, LazyTown is under the watchful eye of Sportacus, an athletic, super-fit, hero, who runs, jumps, flips and flies to the rescue - he always manages to save the day and to help the kids of LazyTown foil Robbie's latest lazy schemes.
Robbie poses as a teacher at the LazyTown school so the kids will stop learning new things. The during chemistry class, Robbie causes a chemical reaction that might blow up the whole school. Can Sportacus stop the reaction and save the day?
Pixel invents a device that allows kids to enter their favorite fairy tales. But when Robbie follows them and plays Big Bad Wolf, the kids get stuck inside the tale! Can Sportacus be the hero of the fairy tale and save them?
Stephanie is invited to join a famous dance school, but it is far away. Is the offer real? Or is it a Rotten plot to get rid of her and Sportacus? It's up to Stephanie to discover the truth before it's too late.