Na véspera de Natal, o mundo de uma jovem rena parece se despedaçar depois que sua mãe se casa novamente e ela é culpada quando seu novo irmão é sequestrado
Niko, uma pequena rena, sonha em seguir os passos de seu pai, um membro da brigada voadora do Papai Noel. Para isso, ele treina todos os dias no vale calmo das renas, incentivado por sua mãe e seu melhor amigo, o esquilo voador Julius. Apesar de nunca ter visto seu pai, suas coreografias aéreas terminam sempre sem graça, virando piada para outras pequenas renas. Culpado de ter atraído uma matilha de lobos famintos para o grupo de renas, ele deixa a manada para procurar seu pai ao país remoto e misterioso do Papai Noel.
After a tearful goodbye, Niko leaves his family behind to fulfil his biggest dream and take his place next to his father on Santa’s Flying Forces. Stella, an unknown challenger, arrives to compete for Niko’s spot. Despite their competitiveness, the pair take a liking to each other, and Niko shows Stella where Santa’s sleigh is hidden. However, on the night before Christmas Eve, Stella steals it. Gutted by Stella’s betrayal and desperate to appease his angry father, Niko heads to the frozen North to recover the sleigh. He is accompanied by his old friends Wilma and Julius.
After a tearful goodbye, Niko leaves his family behind to fulfil his biggest dream and take his place next to his father on Santa’s Flying Forces. Stella, an unknown challenger, arrives to compete for Niko’s spot. Despite their competitiveness, the pair take a liking to each other, and Niko shows Stella where Santa’s sleigh is hidden. However, on the night before Christmas Eve, Stella steals it. Gutted by Stella’s betrayal and desperate to appease his angry father, Niko heads to the frozen North to recover the sleigh. He is accompanied by his old friends Wilma and Julius.