East of the Sun and West of the Moon

Tove is a poor young girl, sold by her evil mother to a mysterious white bear and taken away to live in a cave of ice. When Tove overhears a beautiful song, echoing from deep within their cave, she falls in love with the bear, who is really a prince under a terrible troll spell. Now she must search east of the sun and west of the moon for a way to save her beloved prince.