High school athletes are being coaxed to take a hybrid steroid called Powerballs to enhance their sporting skills. However, it takes over their brains and makes them oblivious to danger, causing them to die.
Walker (Chuck Norris) goes undercover as a substitute teacher to put a stop to the use of "Powerballs" which is a combination of anabolic steroids and methamphetamine. Robert Jayne guest stars as a cop who goes undercover as a student.