A young couple Mira (Abbie Cobb) and Todd (Sean Faris) hire a live-in nurse (Lyndon Smith) to be the caregiver for their sick son, only to discover that she is an "angel of death" intent on replacing Mira through any means necessary.

　　An anthropology professor's obsession with a paranormal mystery threatens her job, marriage, and sanity as she fights to find a missing student.