A solitary woman is on the way to do her laundry. A plaintive voice impels her to step into the basement area. A mysterious force shuts the door locked behind her. Driven by the repetitive calls of the voice, the woman ventures further into the haunted underground corridors, until a hair-raising occurrence in one of the dark rooms convinces her that she must escape at all cost. She rushes to the door, where a second near-death experience ironically proves opportune. The door cracks open under the pressure of the force that has assailed her. Bruised and hurt, the woman runs upstairs for her life. She reaches her apartment, only to realize that the deadly force has been a figment of her own imagination.