When the Northern Lights suddenly vanish, Christmas itself is in danger. Without the glowing auroras to guide his sleigh, Santa may never reach the children of the world.Far in the Arctic, a young caribou calf named Kaya, a polar bear cub called Nanuq, and Luma, a snowy owl, discover they are the only ones who can set things right. Guided by a mysterious fox with emerald fire in its fur, the friends must cross frozen seas, climb mountains of ice, and face the abyss at the edge of the world.But a terrible Shadow rises from the darkness, determined to snuff out the Celestial Fire forever. To save the Lights, the companions will need more than bravery. They must give the greatest gift of all: the light of their own hearts.Full of wonder, friendship, and courage; Aurora's Keepers is a magical Christmas adventure that will leave readers believing in the power of love, hope, and the colors of the sky.