After the death of her parents, Miranda’s life hasn’t been the same. She have been living on Whym Island for over ten years with her wealthy grandmother, and brother. In Whym Island the town folks claim that there is a mysterious sea witch who controls the fate of all on the island and in its surrounding waters. Miranda doesn't believe that until one dreadful night. While on a boat ride with her friends a terrible boating accident takes the lives of several of her friends, and leaves her boyfriend in coma. Suspiciously Miranda was rescued by a boy who in the future she learns is a “betwixtman,” who doesn’t live either down below or up above. Miranda is blamed for what happened that night. She becomes consumed by the traumatic events