Corinne La Mer isn't afraid of anything. Not scorpions, not the boys who tease her, and certainly not jumbies. She knows that jumbies aren't real; they're just creatures parents make up to frighten their children. But on All Hallows' Eve, Corinne chases an agouti all the way into the forbidden woods. Those shining yellow eyes that follow her to the edge of the trees, they couldn't belong to a jumbie. Or could they?

Corinne begins to notice odd occurrences after that night. First she spots a beautiful stranger speaking to the town witch at the market. Then this same beauty, called Severine, turns up at Corinne's house, cooking dinner for her father. Danger is in the air. Sure enough, bewitching Corinne's father is the first step in Severine's plan to claim the entire island for the jumbies. Corinne must call on her courage and her friends and ancient magic to stop Severine and to save her island home.