Expectant mother Liz wakes to find her nearly to term pregnancy has disappeared overnight. When doctors find no medical explanation for the loss, police treat Liz and her husband Rick as prime suspects in what has now become a missing child case. Only Rick and Liz's brother Evan trust her version of events. As word spreads, the young couple is subjected the unwanted attention of the police and prying neighbors. Evan feels for his sister and, as a film student, begins documenting her story, starting with a vacation to the mountains to relieve some of her grief. But as Evan continues documenting their vacation, unusual patterns arise. Evan and Rick are horrified when Liz's condition visibly declines and when the trip spins out of control they realize that whatever happened with Liz and her baby isn't over. None of them are safe.