Martha (Carolyn Jones) and Andrew (Steve Forrest) Alcott own a vacation home where they spend their summers. Martha hates the house, and as the summer goes on, it appears she has good reason, as there seems to be a malevolent force in the place that is strongest around the well in the basement. Events and scenes become ever more familiar, as it becomes clear what the malevolent force is, and what it intends to do with the lives of Martha and Andrew.