After a touching farewell, Niko the Reindeer leaves his family to fulfill his greatest dream – taking his place next to his father on Santa's Flying Forces. However, he faces unexpected competition from Stella, a mysterious new challenger. Despite their rivalry, they begin to like each other and Niko shows Stella where Santa's sleigh is hidden. But on Christmas Eve, Stella steals them. Saddened by Stella's betrayal and wanting his father to stop being angry, Niko sets off to the frozen North to return the sleigh, accompanied by his friends, Wilma and Julius. As our heroes face great danger, they must make serious decisions that will change Christmas forever. Through friendships, old and new, in this touching adventure, Niko will learn how to forge his own path and overcome everything that once hurt him.