Ten strangers unite to tackle a spectacular wilderness expedition.

Heading into the first portage, the brigade tests their strength and skill in a dangerous face-off with the swift current on the Columbia River.

When faced with an upstream fight against the current of the Wood River and an uphill hike through the Rocky Mountains, the brigade struggles to keep pace.

The group descends the Athabasca Pass struggling with the loss of a teammate, the threat of bears and new injuries.

Teamwork is tested when canoes are capsized in the rough waters of the Athabasca River.

As the group becomes divided and tensions come to a head, Wanda suffers the biggest blow.