Conductor JR and his trainee Trevor fight through snowstorms to collect vast consignments of lumber and paper before hauling them back to the freight hub of Cochrane. They navigate extreme weather to get the job done.

Brutal blizzards and ice threaten to derail the network's longest and heaviest freight runs; the mill at Kapuskasing is one of the railroad's most important customers.

Locomotive engineers Jerry and Sheldon try to get passengers through the brutal wilderness from Cochrane six hours up to the last stop on the line, the town of Moosonee.

The railroad teams battle blizzards and a treacherous ice road to deliver a time-critical consignment of fuel to one of the remotest communities in the province of Ontario.

Locomotive engineers Jerry and Sheldon battle through a savage blizzard to get a group of Moose Cree First Nation 186 miles north up to Moosonee for their annual meeting. Among its passengers is a blind American Cocker Spaniel named Maggie.

A freight team collects cars of hazardous chemicals requiring skilled specialist handling, and a high-tech laser geometry test train picks up track defects that must be urgently repaired ahead.