When eleven-year-old Zack Jennings moves to Connecticut with his father and new stepmother, they must deal with the ghosts left behind by a terrible accident, as well as another kind of ghost from Zack's past.
While learning to sail during a visit to his grandmother's at the Connecticut shore, eleven-year-old Tony becomes excited about the rumors of sunken treasure in the area and starts following a couple who seem to be making a mysterious search for something.