River of No Return

With dangerous rocks exposed by low water, Buck must hit high speeds to keep his jetboat out of harm's way; landing solo on a narrow airstrip tests Katie as a pilot; Aubrey plays matchmaker between her reluctant mare and a stud donkey.

Father and son jetboat captains take on Deadman's Rapids. As a storm bears down, scrambling to re-roof the barn, Pete takes a potentially catastrophic fall.

With the rapids raging, Buck trains a new jetboat captain his 8-year old son Dax. Ranch Caretaker Aubrey tends to her pregnant mare during a risky delivery.

When a rafter goes overboard, a legendary jetboat captain springs into action to save the man before the river's rapids claim another victim. Heavy rains threaten to destroy Aubrey's ranch.

A predatory bear stalks a homestead forcing the rancher to aggressively protect himself and his cattle. A jetboat engine failure in the river rapids puts Buck's operation in jeopardy.

As the winter ice thaws, Idaho's River of No Return flows, and the people living on its violent shores navigate the raging spring rapids. The small community hustles to work so they can survive another season in this rugged and dangerous backcountry.

A first look at the new season of Alaska: The Last Frontier.