Thor adjusts to his new life with the powers of the Night Witch; next to him are his faithful friends Angle and Melda. But when a mysterious girl named Vesper washes up on shore and says that a band of cursed pirates is approaching Emblem Island, life quickly changes. Vesper is from an underwater city that was destroyed by the dreaded Calaveras pirates, and she warns Thor that their next target is his village. To deal with the threat, Thor, Angle and Melda, along with Vesper, go on the hunt for the famous Pirate's Pearl, an ancient relic that will give them complete dominion over the oceans.