Vicki, a young woman on the way home after work one night, becomes a witness to a murder. She manages to elude the killer on the city streets. The young woman takes the last exit available to her but soon finds that she is on a primitive road in a dust storm with the killer not far behind. Unnerved by the situation, she screams when she suddenly finds her car heading off the road in a mountainous area. Jim Gray, a lieutenant in the Phoenix PD, is pulled off the drug investigation and is given the responsibility of investigating the shooting incident in its place. He goes out with a new, but unwilling, partner and finds that there is much more involved than just a simple murder attempt. The officers find that there are many jokers in the deck who are attempting to do all they can to stop the pair of officers, and it is causing the loss of life on both sides of the line.