Ponch and Jon investigate several thefts of Rolls-Royce cars, while Ponch gets a chance to compete on a game show.

A fake CHP officer is masquerading as Ponch and Jon help to deliver a baby when the mother goes into labor. CHP officers usually ride in pairs, but this day Ponch leaves Jon to handle an emergency. While Jon is alone, an officer pulls up to a car and acts improperly, so frightening the female driver that she causes a traffic accident as she speeds away. As the Highway Patrol searches for for the unknown officer, Jon learns that the mystery man is apparently his double - and that his career is in jeopardy as long as the phony remains at large.