1.) A teen lives in the mountains with his/her grandparents and finds a nearly dead puppy. his grandfather says it's a wolf and so he/she saves and raises it and finds out it's a magic creature from an ancient prophecy, and that he/she is part of the prophecy.
2.) Vikings kidnap a girl and take her to their hidden base. They become her people and she becomes a respected warrior among them. When given the chance to return home, she faces a difficult choice.
3.) The king and queen's infant daughter (or son) is ill, and offers anything to the one who can heal her. A witch heals her, and asks for the land to be put under a spell of eternal winter. The only way the spell can be broken is if the now grown princess (or prince) gives up her (or his) life.