Sam, a 17-year-old whose younger sister Hollie went missing, suspects two men he sees near his house may be involved. He follows them and breaks into their house but finds nothing. However, he later sees a suspicious man and chases him to a remote house, where he hears screams. Sam breaks in and finds Hollie and another missing child locked in an upstairs room. When the kidnapper attacks Sam, they fall down the stairs. Sam wakes in the hospital having been injured but sees Hollie is now safe with his parents.