A massive multiple-semi crash in a tunnel forces the Coxon crew to clear a big mess in a tight space; Mark Haslett heads to the rescue when a woman is trapped on a dangerous stretch of the highway in Toronto.

A heavy wreck and a frustrating recovery threaten to overwhelm Kevin; after a big change in his career, Sonny struggles to make a mark when a heavy load flips in the middle of the city.

A storm sweeps across the province, sending heavy rescue crews scrambling; in Hamilton, Kevin fights to clear a wreck in time for the plows to get through.

A freak storm unleashes a 100-car pileup east of Toronto, pushing Steve and Sonny to lead the recovery charge; Kevin fights a tough wreck after a trucker smashes into an orchard.

Freezing rain scatters Gary's team, forcing him to work solo to open the continent's busiest border crossing; in Windsor, Brad, Eric and crew fear a tragedy when they untangle a sedan badly crushed by a semi.

Sonny hunts for a shortcut across town after a runaway van smashes through a wall and into the path of a full-speed truck; the crew from Herb’s hurries to save a load of pharmaceuticals before it freezes.

The pressure is on for Steve when a flipped truck blocks access to the airport; Coxon fights a wreck with a toxic payload; a wild rollover rips a cab off its chassis and leaves a trail of destruction for the Ross crew.

Sonny and the team from Steve's Towing fight to remove the wreckage of a dump truck embedded in an overpass on the 401; James Ireland faces a trailer threatening to cave in on his crew.

A tragic collision between two semis sends Bear and the crew from Ross into the fray; Nate and Andrew improvise after a load of lumber rolls on the 401, backing up traffic all the way to Quebec.

When a violent windstorm flips a tractor-trailer on an exposed bridge, Kevin works under the most difficult and dangerous conditions of his career; James takes on a wind-battered wreck of his own.