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Marie has lost the precious memories of her mother and her magic spell. One day she meets a mysterious nutcracker in her dream and strays off into an extraordinary world.
One morning, a boy dashes out the door of his apartment carrying a school bag on his back. He jumps into the building elevator as on any other day; but today, it won't stop and just keeps on going down.When it finally stops with a jolt and the door opens, the boy finds himself in a world deep under the ground. There his adventure begins.