PFC Lug Nut is a 1942 truck who had many adventures while serving in the US Army. Sadly, he has been sitting in a Kansas junkyard for years, just waiting for the right buyer. Tim Cooper, owner of Cooper's 4x4 Shop in Junction City, Kansas, loves old cars and trucks and can fix anything. When he decides to purchase a 1942 army truck, it is not long before the owner of the junkyard hears of his wish, reaches out, and delivers PFC Lug Nut to Tim's front door. But what Tim doesn't know is that PFC Lug Nut can talk. When Lug Nut finally reveals his secret, he tells Tim of his many adventures since he was a Private First Class in the army. Inspired by his story and their newfound friendship, Tim rebuilds Lug Nut, installs a powerful new 572 motor, and repaints him. Tim and Lug Nut decide to go mud racing and become famous mud racers. And they are just getting started! In this continuing tale, a 1942 army truck finally receives a new chance at life when he is purchased by the owner of a 4x4 shop in Kansas.