In the fading frontier town of Bright Hope, a quiet night is shattered by a brutal and mysterious attack that leaves several townspeople missing, including the wife of a local rancher. The town’s resolute sheriff, Kurt Russell, organizes a desperate rescue party, joined by the injured yet determined husband Patrick Wilson, a dandified but deadly gunslinger Matthew Fox, and the sheriff’s loyal, aging deputy Richard Jenkins. Their journey into the vast, unforgiving wilderness becomes a harrowing descent into terror as they track the captives to a remote valley, only to discover the perpetrators are not mere bandits, but a feral tribe of cave-dwelling troglodytes. Blending the stark, brutal realism of a classic Western with the visceral dread of a horror film, S. Craig Zahler's directorial debut crafts a tense and grueling odyssey where the party must confront not only the savage landscape but a primal evil that defies all frontier justice.