Stephanie and the LazyTown children decide to repay Sportacus for all of his heroics by giving him a day off - with Stephanie taking over as hero. Robbie Rotten decides to take advantage, and builds a nasty dog which runs amok in the town.
Robbie Rotten discovers the LazyTowners are having a Christmas party, and believing he wasn't invited, sets out to ruin the day with a giant snowball.
