信则灵。小男孩始终坚信圣诞老人的存在，但周围的大人和玩伴都认为这只是他天真的一厢情愿。圣诞前夕，小男孩终于因为他的坚持而得到了回报，睡梦中的他忽然感到屋子颤抖起来了，一列长长的火车停在了他的家门口。当他战战兢兢打开房门时，和蔼的列车长邀请他参加北极的圣诞派对。惴惴不安的克 劳斯踏上了火车，发现很多和他一样的小伙伴们。于是，兴奋不已的小男孩开始了他的北极狂欢之旅。This is the story of a young hero boy on Christmas Eve who boards on a powerful magical train that's headed to the North Pole and Santa Claus's home. What unfolds is an adventure which follows a doubting boy, who takes an extraordinary train ride to the North Pole; during this ride, he embarks on a journey of self-discovery which shows him that the wonder of life never fades for those who believe.