A young woman named Sara is having a hard time adjusting to the unexpected death of her sister. She hasn't been able to get over the tragedy and has been grieving for months. She starts having unusual happenings in her house one day. Doors open and close by themselves, things move mysteriously, and she can hear whispering in the dark. She begins to think that her sister's ghost is following her around.

​

The activity at Sara's house intensifies and gets increasingly disturbing throughout the course of the days. She hears her sister's voice crying out to her and sees her sister's ghostly figure prowling in the darkness. Sara's family and friends try to persuade her that she is hallucinating, but she is certain that her sister's spirit is real and that it is pursuing her.