バービー and her little sister Kelly practice ballet steps, but Kelly cannot master them. Upset, Kelly gives up, but バービー tells her about Clara, a メリダとおそろしの森 girl. At Christmas, Clara receives a Nutcracker doll from her Aunt Elizabeth. Clara falls asleep in her parlor with it but the parlor is invaded によって a マウス King and his army, searching for the Nutcracker. Nutcracker comes to life and fights, but when Clara tries to help she is shrunk. When the army retreats, thanks to Clara hurling her shoe at the マウス King, Nutcracker tells her he only looks like a Nutcracker because of the マウス King. Both victims of the evil king's magic, they have to find the Sugar 梅 Princess, the most powerful faerie in Parthenia.