Season 5 of HEAVY RESCUE: 401 continues to tell the harrowing stories from Ontario's notorious 400-series highways - extending from Windsor in the west to the Québec border in the east - during winter driving season. In Toronto, Sonny Subra makes a major change, leaving behind the company where he honed his skills and earned the senior spot. In Sonny's absence, Steve turns to his young crew to find new leaders when raging truck fires and rollovers strike in the heart of the city. After suffering an injury, Gary Vandenheuvel steps back from his work on the highway and leans on his crew, pushing him to make a decision that will change the future of Preferred Towing. At the East end of the 401, the crew from Cornwall Towing fights some of the biggest wrecks of the season. But owner Duncan Cooper is fighting just as hard to honour his father's legacy with a daring new addition to his fleet. Navigating blinding whiteouts, multi-car pile-ups, and truck roll overs, Season 5 emphasizes the comradery of the roadside crews, police, maintenance contractors, and several other organizations that safeguard the nation's most critical commercial corridor.