Sonny is tested when a 40-car pile-up turns a major highway into a war zone. Bear faces a fierce storm that's triggered a triple-semi crash. Preferred Towing races to clear the road. John jumps into speeding traffic to tackle an urgent job. Written by Great Pacific TV

Pressure is on Kevin when a semi crash shuts down a crucial border route. Sonny helps out a stuck trucker. James and Bubba tackle a tanker wreck that has thrown the Toronto commute into chaos. Collin works to master a tough maneuver.

When a courier truck rolls over, James and Bubba battle a bursting trailer as they struggle to deliver the mail on time. A storm puts Mark in the middle of a crash zone on the 401. Crew has to dive for cover during an icy airbag job.

When a semi smashes into a building, James and Bubba must recover it without bringing down the whole structure. Problems plague Kevin when a truck crashes in deep mud. Sonny fights traffic, and frustration, trying to answer an urgent call.

Gary's team fights to upright a battered trailer that risks splitting open. A rookie takes a shot as lead operator on the Rotator when a shipment flips on the 401. James runs out of options for removing a ripped semi from the highway.

Kyle tackles a wreck and proving he can lead the team. Curious drivers create problems at the scene of a jackknife with Sonny. Ross' crew take on a job after a storm. Tragedy hits a nearby tow company, driving home the dangers of the job.

A whiteout pile-up scatters heavy I-beams across the highway, testing James and his crew; Kevin must lift a 20,000-pound chunk of steel off the road.

A surprise storm brings chaos to the city. Steve cleans up a spill blocking the 400. Sonny aims to keep an alternate route moving. John recovers a semi that went airborne. Gary gambles with a maneuver so big, his own crew can't believe it.

Worlds collide when Heavy Rescue veterans from Highway Thru Hell join the Heavy Rescue 401 crew to weigh in on the unique challenges of recovery operations in Ontario vs British Columbia, comparing the toughest wrecks of the past winter.