Oakland University student Jay goes on a date with her new boyfriend, Hugh. That night, Hugh points out a young girl in the back of the theater. When Jay says she cannot see the girl, Hugh becomes unnerved and asks that they leave. On another date, Hugh and Jay have sex in his car, but afterwards, he incapacitates Jay with chloroform, and she wakes up tied to a wheelchair in the Packard Plant, where Hugh explains that she will be pursued by an entity that only they can see and which can take the appearance of any person.

If it catches Jay, it will kill her and pursue the previous person to have passed it on: Hugh. After they see a naked woman walking toward them, Hugh drives Jay home and flees. The next day, the police cannot find the naked woman or Hugh, who was living under a false identity.