On a prowler report at a non-existent address someone fires multiple rounds at the officers. Next day on a run to a heliport to pick up a blood donor, they are again fired upon. Evidence points to the same shooter both times and reveals that Adam-12 is being targeted by a man known to pass bad checks. Reed's wife receives a call indicating that Reed is the target. A man tries to kill himself with gasoline at a gas station but Malloy stops him using a fire extinguisher. Another nighttime prowler call turns up a wino that Reed comes close to shooting. Malloy drops Reed off at his house when a man walks by, known to Reed, and tells him that his car has broken down. Reed offers to let him use his phone. Malloy notices there is a car like the one the suspect is supposed to be driving down the street as he leaves.

Malloy and Reed are at a crime scene in the hills where another girl has been found raped and dumped but this time she is alive. Her account includes the fact that a red sports car was involved. Later, they see a red Porshe pick up a young girl and the car tries to escape when they signal it to stop. The car stops and dumps the girl. Malloy continues the chase alone but loses the car. He finds a red Porshe but the girl says the owner is not the man. A call to a robbery at a lumber yard has unexpected aid from police scouts who collar one of the two men. Reed captures the second man in a shootout. The mother of the young girl calls the officers when she finds drugs in her daughter's laundry. She is selling drugs and the man they had her identify is her supplier.