An iconic 1969 Road Runner gives Mike a run for his money and a crash course in bodywork; a client build cuts very close to home; while out on a simple errand to buy shelves, Mike manages to make a deal on something for his trusty companion, Lincoln.

A Rust Valley road trip steers Mike into the danger zone after Connor gives him an ultimatum: buy another car and Connor will blow up one from the Field of Dreams.

Mike restores a 1968 Beaumont for a charity auction, but scrambles to save the build and the fundraiser when his budget is pulled out from under him; Avery steals a Rust Bros client with a German-made Unimog, putting his friendship with Mike at risk.

Mike struggles to finish a problematic 1966 Pontiac Parisienne, while stumbling into direct competition with a Rust Valley neighbour; Avery crashes into his new role as shop manager.

The day of Mike's auction arrives, and with it the biggest financial gamble of his life. Mike grapples with regret and chaos threatens to derail the entire event.

Mike struggles to finish the restoration of a legendary muscle car, and trading gets chaotic when he goes up against The Great White Shark; one of Rust Valley's own heads to The Detroit Autorama with a 1964 Acadian.

Mike refuses to sell an old clunker to a pair of serious buyers and instead takes on the challenging restoration of a 1967 Mercury Cougar with a tragic past; Avery goes head to head with Mike at the local swap meet.

Avery struggles to save his business while Mike is determined to end the year on a high note. However, old secrets and conflicts with Connor get in his way.

Rust Valley rivals face off in the Shop Truck Challenge; Mike struggles to restore a 1971 Chevy Blazer for a wedding day surprise; Avery's plan to repurpose a military truck for music festivals hits a sour note.

Chaos arrives in the final days of Mike's auction preparation, throwing the event into jeopardy. Avery scores his first client of the year.

Mike kicks off his fifth year in business with the restoration of a rare 1971 International Scout II, before teaming up with his brothers to find a new home for their late father's 1964 Mercury motor.

Mike and Avery recover a valuable abandoned Volkswagen, and threats from the authorities force Mike to make a surprising decision about the future of his Field of Dreams.

Avery gambles on finishing a build from his past and the authorities crack down on his vehicle-filled property, while Mike finishes his '55 LaFrance Fire Truck.

Connor enlists the Rust Bros on a personal build, while Avery goes over budget on his dream truck. James tackles a project from his past.

A visit to Avery's family farm leads to the discovery of unexpected treasures, and puts Mike's veterinary skills to the test. Meanwhile, a new member of the rat rod community needs help rebuilding his dream.

A rare Diamond T truck build has Mike and his crew scrambling to keep up with their client’s demands. Avery battles a hornet’s nest, his mother and his own impending sense of doom as auction day arrives.

Mike takes on a rare Hertz Shelby Mustang for his friend's brother, but the badly damaged car might be too far-gone; a drag race against another local shop turns into a Chevelle showdown.

Mike fixes a 1961 Cadillac to showcase and smash to pieces at Rust Valley's annual Demolition Derby; mechanic Dave enters a 1974 Chrysler New Yorker for the big event.

Mike and Avery try to get an auctioneer to help them downsize their collections, but Avery scares him off. Frame issues leave Mike's restoration of a Diamond T truck dead in the water.

With his car auction fast approaching, Mike strategizes how to draw a bigger crowd. James West takes on his biggest, most challenging build yet - turning a 1955 Cadillac into a 70s-inspired Street Freak.

Old rivalries bring new alliances as Rust Valley's competing shops get ready to face off at the annual Hit-to-Pass race; the cost of Avery's Deuce-and-a-Half music truck spirals out of control.

Mike and the crew take on a World War II-era Power Wagon; a 1968 Chevy Chevelle becomes a nightmare job.

Mike restores a 1966 Mustang in the hope of finding a buyer with deep pockets; Connor helps his dad sell a 1968 Plymouth Satellite.

JF begins restoring a 1928 Model A Roadster, while Avery takes on a 1941 military vehicle and these antique machines are full of challenges; Mike chases redemption at the races.

Mike's brother entrusts him to restore his 1964 Buick Riviera dream car; Mike restores a 1966 Beaumont Sport Deluxe; Mike hires a 17-year-old apprentice who's failed her driver's test and needs her licence to do the job.

Mike restores a 1938 International Harvester; the shop holds a swap meet; wedding bells ring for Greg.

The crew at a new restoration shop takes on their first jobs restoring vintage cars, including a 1966 Lincoln Ragtop convertible and a 1970 Dodge Dart Swinger.

Mike is burning the candle at both ends, working at remote locations for his rock scaling business, while trying to manage the shop's restoration of a 1969 Road Runner convertible from afar.

With winter looming and the restoration season ending, Connor goes behind Mike’s back to restore a 1967 Chevy II, while Mike puts an over-the-top engine in a 1964 Ford F100 truck.

Mike restores a 1941 Ford Super Deluxe and a 1964 Ford Fairlane 500, as a natural disaster threatens his shop.