While house sitting for her uncle, a customer service agent working from home gets terrorized by a dissatisfied psychopathic caller.

Troubled divorcee Mary Kee is tormented by a series of sinister phone calls from a mysterious woman. When the stranger reveals she’s calling from the past, Mary tries to break off contact. But the caller doesn’t like being ignored, and looks for revenge in a unique and terrifying way…

One night, an unusual stranger in need (Malcolm McDowell) asks a woman living alone in a house in the woods if he can use her phone. It soon becomes clear that they’re playing a strange mind game and that there’s something very wrong about the woods.