A naive drifter runs away from his army father in hopes of making it on the car racing circuit. In Las Vegas, he meets a young scam artist, who develops a crush on him. He is then introduced to a whole gang led by a young hustler. The racer-to-be then gets a lesson in the wild side, getting involved in one situation after another.

ER explores the inner workings of an urban teaching hospital and the critical issues faced by the dedicated physicians and staff of its overburdened emergency room.