From CHiPs Online:
Ponch and Jon join Turner (not Jeb...Jane Turner!) in pursuit of a stolen car. It crashes at a chemical storage facility and explodes. Getraer needs volunteers to escort the trucks to the nearest chlorine gas facility. They feel it's too dangerous to store it there. Turner, Ponch, and Jon are on escort duty.
Meanwhile, some drunk guys are shooting a gun out of a truck. They pass the truck convoy but manage to cause a major accident up the road. Ponch, Jon, and Turner have to deal with a loose criminal and tiger. They find the criminal (who's just a drunk) and catch the tiger in a convenience store.
Instead of waiting, they decide to take the alternate route. They're stopped by a mob of people who don't want the trucks going through their town. After sweet talking the local townsfolk, they drive through town. They have to stop when the road is blocked due to a landslide. Ponch, Jon, and Turner shovel the dirt and rocks away.
While Robbie tries to fix her truck, a rock accidentally breaks a valve. While shutting it off, she starts to suffocate. Some hikers tell Ponch that there's oxygen nearby. He rides off on the trail to get it while Jon moves a large rock out of the road with Turner's cruiser. One of the hikers, Robbie, Turner, and the oxygen head towards the hospital. Ponch leaves his motor (with a flat tire) and a hiker behind.
Jon drives one of the trucks to replace Robbie. When Jon hits a rock, his trailer comes loose. He can't stop or the trailer might fall off. Ponch sees that the trailer is coming loose. Ponch has to get onboard to fix it. He rides ahead, parks, and jumps on Jon's truck. When Charlie pushes the trailer back on, Ponch locks it in place. Ponch gets a ride back to Jon's motor with a woman.
The next day, Ponch arranges a date with Robbie using his secret code and the credits roll.