A young chimney sweep named Amelia writes to Father Christmas asking for help for her ill mother. She is full of hope that her wishes will come true, but she is the only one. However, in Elfhelm, Santa's home, trouble is brewing with unhappy elves and trolls wrecking the North Pole with the intention of getting Christmas cancelled. Father Christmas needs Amelia's hope to ignite the magic so that Christmas can take place, and comes to find her as her spirits revive in time to save Chrismas for the world.