"Hailey (Barbie) and her friend Kristen are two ballet students at a special dance school. Their ballet instructor is always telling Hailey to keep to the routine and to stop changing the dance. But, Hailey loves to make the dance her own. One day, Hailey's dance shoe rips, so she and Kristen go downstairs to the seamstress/cobbler to get her shoes fixed. Madame Katarina gives her a pair of magic dance shoes, which transport the girls to a magical place where Hailey becomes the lead dancer in all the classic ballets. And true to form, she keeps changing the dance routines a bit. One of the girls is kidnapped Von the evil Snow Queen. But with the help of her friend, and Von staying true to herself, she dances her way to a bright future."
Note that apparently whoever wrote this sypnosis got Hailey and Kristyn mixed up and also misspelled Kristyn's name, so just ignore that.