A professor tries to convince the residents of a small town that a series of attacks are the handiwork not of mountain animals but of a rare river-dwelling shark.

After the murder of her childhood best friend and fellow classmate, Kathleen must catch a killer who's preying on young girls around campus.

A time-travel experiment in which a robot probe is sent from the year 2073 to the year 1973 goes terribly wrong thrusting one of the project scientists,into a plague ravaged alternate time-line whose war weary inhabitants are locked in a constant battle with killer robots from the future.