In Sommetville, the Wild Ice Gliders' Christmas race is all anyone can talk about, and Aria and Liam are determined to win. But one jump off the ski ramp sends them flying straight into Santa's village at the North Pole, where they learn that Santa has been kidnapped. Without him, Christmas is in danger.

And to top it off, Santa's village is not quite what Aria and Liam expected. Robots have taken over many of the elves' jobs, and the village chief refuses to believe Santa is even missing. But the elves have their own suspicions. They believe the kidnapper is someone who has already tried to destroy Christmas once before.

Aria and Liam set off across the North Pole to find him and bring Santa home. But someone clearly does not want them getting there. They have to dodge numerous traps along the way, and soon they start to wonder if everything is really as it seems.

If Aria and Liam fail, there may never be another Christmas on Earth.