Barbie, and her eleven sisters, live in a kingdom full of dance and laughter until her greedy aunt moves in and strips the joy from the castle. The princesses are miserable until Barbie discovers a secret entrance to a magical world in their bedroom. While the princesses are dancing each night in this magical world, their evil aunt is gaining more and more power in the world above. With the help of a cobbler, his bird and lovable cat, Barbie thwarts her evil aunt and restores joy and happiness to the castle.
潔妮薇公主有天和那十一位芭蕾舞公主姐妹，發現一個神秘的通道，通往一個可以讓人夢想成真的魔幻世界。
但是此時她們的父王面臨到失去王位的危險，潔妮薇公主將和她的姐妹們齊心協力，拯救她們的父親，並且發現可貴的親情，將克服所有的難關！
