The Sea of Trolls
Jack, a young apprentice still learning how to control his magic powers, is kidnapped, along with his sister, by an evil king and half-troll queen. When Jack casts a spell on the queen and makes her hair fall out, his punishment is to sail across the dangerous Sea of Trolls; otherwise, his sister will be sacrificed. Along his route, Jack encounters many strange and imposing creatures. But will he be able to save his sister?