An accident victim Ponch and Jon helped is pressed by his lawyer into suing them. Ponch encourages his partner to stay on the force when a disillusioned Jon considers leaving the CHP to sell used cars for a successful high school friend.
Ponch intervenes when he suspects Jon's young nephew of joyriding in stolen cars. An overeager officer is obsessed with recovering a stolen movie stunt car being employed for diamond heists. Ponch trades in his motor home for an apartment.
Keeping the streets safe for trick-or-treaters, Ponch and Jon search a haunted house for a runaway boy, foil a ghoulish getaway and nab a candy bag snatcher. Meanwhile, Sgt. Getraer is determined to bust the Halloween Hobgoblin.
Ponch and Jon befriend a fatherless country boy out of place in the big city and in big trouble for firing his pellet gun into traffic. A reckless ambulance driver threatens lives when he illegally transports cases of unstable dynamite.
Cahill is critically injured in a multi-vehicle pile-up that claims eleven lives. Ponch and Jon are tapped to serve on the Multidisciplinary Accident Investigation Team determined to pinpoint the cause and to clear Cahill from blame.
Ponch and Jon put away their bikes and play a diplomat and his chauffeur when they go undercover to prevent a wealthy man and his beautiful granddaughter from falling victim to a violent extortion racket.
Ponch reconnects with Robbie, whose trucking business is at the mercy of a competitor trying to put her out of business. Meanwhile, Officer Cahill is tracking everyone's biorhythms to see if it affects their performance on the job.
While Ponch and Jon are off in Sacramento attending a seminar, Grossman starts to collect anecdotes about the team from other officers so that - win or lose - they can give them a party, half testimonial and half roast.