Stephanie is the niece of the Mayor of LazyTown. She is staying in LazyTown for the summer.She tries to make friends but nobody is outside playing. Her uncle tells her to ask the help of Sportacus to help make LazyTown more active.
Stephanie has nobody to play with and tries to get everybody going. Meanwhile, Robbie Rotten is ploting to ruin Sportacus' soccer trick for the Spectacular Sports Day.
Sporacus becomes sick and leaves Stephanie and the rest of the kids to face Robbie Rotten in a Sports game.
After losing his crystal, Sportacus offers a reward of a free wish to whoever finds the crystal. Robbie takes advantage of reward so he can wish away Sportacus.
Robbie tries to keep Sportacus from sleeping so he will lose energy and the upcoming basketball game.
Stepanie and the kids of LazyTown have to get Sportacus out of jail, after Robbie framed Sportacus for stealing a cake.
Ziggy wants to become Sportacus but he finds himself in big trouble when he destroys the kids' new club house.
Robbie Rotten desquises himself a Sportacus to make LazyTown lazy.
On Ziggy's birthday Robbie Rotten gives him a taffy machine. Ziggy simply discards the toothbrush given to him by Sportacus. But he soon learns his going to need it when the taffy machine malfunctions and covers the city in taffy
Robbie Rotten takes up the disquises of a Scout Master and tricks the kids into being lazy. Stephanie is the only one that sees through Robbie's trick.
The kids grow their own vegetables, but Robbie convinces them that a disease has infected the whole town - and the only cure is to ban all healthy things.
Robbie Rotten is at it again. This time Robbie has dressed up as a pirate and has the kids go on a Treasure Hunt for the Lazy Town Stone to find it for him.