Clara is the main character in Barbie in the Nutcracker. After receiving a Nutcracker from Aunt Elizabeth for Christmas, Clara's parlor is ambushed by the Mouse King and his army. Clara tries to fight them, but she is shrunk by the king's magic to the size of a mouse. In order to be transformed back to her full size, Clara must embark on an expedition to find the Sugar Plum Princess - a powerful fairy who possesses the powers to return Clara back to her normal size. Her love interest is King Eric, who she is separated from and later reunited with at the end of the story.