Jamie Davis travels across North America to explore the roots of heavy rescue, from the first tow truck, to the latest modern machines; his classic restoration, the Mighty Mo, finally comes to life.

Jamie battles a truck fire on the Coq and reveals big changes to his operation.

Jamie Davis Heavy Rescue's 'A' team, Adam and Kevin, spend a busy morning clearing spun-out semis off the road when word comes that a multi-vehicle pile-up has closed down both northbound lanes.

Jamie Davis, eager for the winter season to begin, has one thing on his mind - amp up his manpower and his equipment, so he's ready for anything that happens on the mountain. He has brought back a big crew - Adam Gazzola, Narayan Samy, Kevin Ritchie, Rob Mitchell, Bruce Hardy, Ken Monkhouse, the new guy Gord Lundin, and Davis' stepson Brandon Kodallas. Everyone has big, but not always realistic, expectations for the winter ahead.

Mitch discovers a massive wreck involving two semis; Reliable and Aggressive Towing join forces to recover a pair of entangled 18-wheelers; a tippy trailer abandoned on a soft shoulder tests Jamie; Gord finds himself in deep in a peat bog.

The closures of two major highways cause drivers to voice their frustration leaving Gazzola in a sour mood over all the grief he receives. Ken Monkhouse arrives at a job to find that the competition has gotten the jump on him. Responding to a woodchip wreck, Davis, Gazzola and Ritchie disagree on how to recover the wreck, leaving Davis to do his own swamping. Later, when a heavy SeaCan tips over, Davis and his rotator are pushed to their limit. Monkhouse, realizing he needs help in the car towing division, invites Kodallas for a lesson in a new truck, but Kodallas has words with his stepfather and walks off in a huff. Monkhouse then turns to the new guy - quiet, tattooed Lundin - testing him out on a tough tow lesson.

A new winter season starts with Jamie Davis heavy rescue split in two… Adam has taken half the fleet north to Alberta’s rich and dangerous oil fields while Jamie stays back to fight and keep the Coq open all by himself.

As British Columbia's heavy rescue heroes gear up for another winter, Jamie, Al, Jason, and Ken team up to look back at each other's recoveries and take a look ahead at the new season.

A local competitor challenges Jamie's status on the Hill. A trailer full of cat food bursts into flames - and Scott and Gord have to battle for two days to get the burning heap off the Smasher. Bruce gets into a fight that lands him in the hospital.

Heavy rescue has to recover a severely damaged trailer loaded with millions of plastic beads. Spring rains are causing rock slides on Highway 1. When a B-train loaded with lumber drives off a cliff in order to avoid a boulder, Jamie's called in to recover the wreck before it falls down onto an active railroad line.

An overturned load of heavy pipe becomes an all-out battle for Reliable Towing; Jamie considers buying another vintage wrecker; Mission Towing's Ken Duperon hustles to save a vehicle on the verge of sliding off a snowy mountain road.

When a semi full of mail goes off a cliff, Adam and the crew are sent out to unload and recover it. When a winter-worn cable snaps, narrowly missing Adam's head, Jamie's most senior driver threatens to go on strike.

Tension between Jamie and Adam boil over as they struggle to flip a B-train on a narrow icy road. Adam comes close to quitting, but then backs off when Jamie makes him a promise. A two-car collision closes the snow shed and puts Ken's towing know-how to the test. A truckload of Christmas mail nearly goes off a cliff.

Jamie heads north in B.C. to rescue a tractor trailer that tipped on its side.

A head-on collision between two semis has the crew battling to clear the charred wreckage and get the road open. While Kevin captures the action on tape, Samy does most of the heavy lifting, earning him a bottle of scotch.

A trailer filled with costly pharmaceuticals gets imbedded in a block of ice. A truckload of frozen chickens crashes into a tangle of trees. 65-year-old Bruce begins to show signs that he may be over the hill. Rob's promotion to lead flagger is short-lived when police revoke his license for speeding.

A massive build up of snow on the Coq means avalanches are imminent if something isn’t done fast. In Alberta, Adam and Brandon face off in a clash that will change the course of the winter season.

Gale-force winds sends a semi airborne and wreaks havoc on Jamie's operation in Hope; Al and Gord try to recover a massive mining truck.

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A double-trailer load of lumber has flipped and spilled across a quarter mile of highway. Even with three heavy rescue trucks, Jamie's crew doesn't have enough equipment to do the job.

Jamie isn't the only tow guy on the Coq. Lone wolf Al Quiring is a tough as nails wrecker and Jamie's main rival. Their dads did battle a generation ago, now Jamie and Al are fighting it out for the title - 'King of the Coq'.

A semi hits a barrier so hard that it tears off the trailer's rear axle, blocking the Coq's most important exit. Scott tells Jamie he's fed up with the vintage truck he's been driving, and a mysterious new driver shows up in the yard to start work.

A record snowfall brings B.C.'s vital Coquihalla Highway to a standstill and sends shockwaves across the region. Howie leads a team on a dangerous recovery that sparks an unexpected emotional reaction. In Alberta, Adam and Colin have to get a toxic chemical wreck safely back on the road.

In the season finale, Adam faces a tough personal choice about his future in Heavy Rescue. Jamie finds himself in harm’s way on one of the most technically difficult recoveries of the year. As Jamie looks ahead to next season, he makes a bold gamble that impacts both his BC and Alberta operations.

It's Christmas and the highway is in chaos. The team works to right an overturned truck full of holiday cheer while Nik faces a test of his own.