Hauling $50-million worth of freight from Vancouver, a massive train heads straight into the avalanche zone after a major snowstorm.

Treacherous terrain threatens to derail a two kilometer-long grain train; a massive polar bear trap is delivered to a remote Arctic community.

Smashed tracks and century-old bridges challenge crews as they haul a crucial 152-car payload of coal across the mountains.

In the heart of the Rocky Mountains, a spike in the weather wreaks havoc on the CPR, triggering a mudslide and a washout that threaten to shut down this critical lifeline.

Lethal rockslides wreak havoc on the CPR and a three-kilometre load of potash; the Polar Bear Express enables a father-son hunting expedition.