Robbie wins the election for Mayor by cheating and makes up new rules for LazyTown that encourage laziness. Mayor Meanswell becomes a spy and--together with Sportacus and the kids--try to foil Robbie's plan.
Stephanie and Ziggy ask every citizen of LazyTown what their favorite song is. They find out that it takes something different to get everyone singing and dancing.
Robbie thinks he's not invited to the big Christmas party, so he decides to wreck it. Sportacus must save the day before a giant snowball rolls through the festivities.
Robbie Rotten can't figure out why his plots against Sportacus never work. So, he devises the ultimate plan -- using all his inventions against Sportacus at once!