It Follows

Annie Marshall runs out of her house but denies to onlookers that she needs help. She gets into her car and drives away. That night, she sits alone on a beach, and when her parents call, she tells them she loves them. In the morning, her mutilated corpse remains on the beach.

Carefree college student Jay Height goes to a movie with her boyfriend Hugh. Hugh points out a girl in a yellow dress, whom Jay says she cannot see. Unnerved, Hugh asks that they leave. Later, Hugh and Jay have sex for the first time in his car, after which he incapacitates her with chloroform.

Jay wakes up tied to a wheelchair, where Hugh explains that he has passed something to her through intercourse — she will be pursued by an entity that only she (and the previously afflicted) can see, which can take the appearance of any person. It moves at a walking pace, but it always knows where she is and will be approaching at all times. If it catches Jay, it will kill her and pursue the previous person to have passed it on. Hugh waits until a naked woman slowly approaches them to prove Jay is being followed, then urges her to have sex with someone else soon. He drives Jay home and flees. The next day, the police cannot find the naked woman or Hugh, who was living under a false identity.