On a beach, young Evie finds an accursed necklace, unwittingly freeing an evil water demon intent on claiming her and loved ones.

As a child, young Evie lost herself in the myths and legends of the sea. As she plays and explores the headland, she finds a cursed necklace washed up at the seaside. She doesn't realize the evil presence connected to it. As its power takes hold of her, she unleashes a deadly water demon that wants to claim her and those she loves.