The forgotten

Elsa is going to learn sooner or later that she couldn't keep her powers a secret. When she fails, she runs away to the mountains, where her powers and her are free. But she learns she still can't control her powers. She soon meets a boy named Jack Frost, he cared for her but as time comes on she soon finds out that's it's not all fun and games, when she is descovered by her little sister, Anna. Anna doesn't just bring news about the past, but bad news about the future of her kingdom. Can she save the kingdom?