All Clara wants is a key – a one-of-a-kind key that will unlock a box that holds a priceless gift from her late mother. A golden thread, presented to her at godfather Drosselmeyer’s annual holiday party, leads her to the coveted key-which promptly disappears into a strange and mysterious parallel world. It’s there that Clara encounters a soldier named Phillip, a gang of mice and the regents who preside over three Realms: Land of Snowflakes, Land of Flowers, and Land of Sweets.