There's a new parts manager for C & A Transport: Ben Handley. Mike and Jerry wind up taking Ben along on a run; Ben doesn't seem to know much about trucks or mechanics, and he seems to have an alcohol problem. But when they come across a bad traffic accident on the road, Ben Handley gives first aid to the injured motorist-- long ago, Handley had been a doctor. Later, Mike gets Handley a job as a C & A company doctor.

[goof: it would help make the show more authentic if the doc knew how to pronounce the word ""defibrillator"" correctly.]

Mike has a really hot load to haul this week: radioactive Iridium-192, which is used principally in industry, to detect small cracks in large metal pipes pumping liquids. The stuff is potentially deadly if it fell out of the protective lead box it's in. Mike delivers the load in good condition, and on time.

[scientific note: Iridium-192 is a radioisotope with a half-life of 72 days. So after 72 days, only 1/2 is still radioactive; after another 72 days, only 1/4; then 1/8th, and so on.]

Mike can't believe it when Jerry is accused of stealing on the job, and gets fired. Even stranger is the fact that Mike can't get any explanations from the managers at C & A, or Jerry himself. Mike does some investigating, and finds out Jerry is really working undercover to catch the ones who have been stealing freight from C & A.

Mike and Jerry pick up a hitchhiker on the road; the guy is big, like a wrestler. When they have a meal at a truckstop, they run into a boxer, and find out the hitchhiker is a former boxer himself. The boxer calls the hitchhiker a has-been, and challenges him to a fight.

Mike Malone puts the pedal to the metal to get home in time for Ginny's 10th birthday.

Mike and Jerry always have a steady paycheck by working for C & A trucking. One day they find out how rough some independent truckers have it, they learn of a crooked racket trying to exert protection money from them. Mike and Jerry work with the independent truckers to put the racketeers out of commission.

Mike and Jerry become eyewitnesses to a killing. They are determined to testify in court as to what they saw-- but in the meantime, Mike and Jerry wind up on the hit list of the gangsters. Mike and Jerry finally testify, and put the entire gang behind bars.