Malloy and Reed are given an older cruiser with 300 miles to go until retirement. They quickly learn the car is extremely unreliable and barely works: the accelerator surges, the glove compartment door constantly drops on Reed's knees, the water hose breaks while they are sneaking up on a prowler suspect (actually just a man who once lived there), their malfunctioning taillights prevent them from writing a ticket to a citizen whose car had the same problem, the distributor cap fails when trying to respond to another call, and finally, after capturing a pursuit suspect, the car's brakes fail and the unmanned car totals itself on a light pole. Another call regarding a truck loading up at a warehouse leads to the arrest of a large group of organized burglars after Malloy notices a slight discrepancy in their otherwise foolproof plan.

Malloy and Reed are stunned to discover that the driver who led them on a high-speed chase is the son of Sgt. MacDonald, and Malloy takes it upon himself to help his boss figure out why the young man is acting out. In the meantime, they investigate a possible burglary in progress at an apartment building, mediate a dispute at a park over an elderly woman feeding ducks, respond to a call of two armed men fighting over a woman and deal with a wino who is attempting to direct traffic at a busy intersection.