The year is 1823, and the trappers of the Rocky Mountain Fur Company live a brutal frontier life. Trapping beaver, they contend daily with the threat of Indian tribes turned warlike over the white men's encroachment on their land. Hugh Glass is among the Company's finest men, an experienced frontiersman and an expert tracker. But when a scouting mission puts him face-to-face with a grizzly bear, he is viciously mauled and not expected to survive.