A small cavalry troop in the American Southwest, isolated and besieged by Apaches, finds themselves under the command of Sergeant Vinson after their leader is killed in an ambush. Vinson bears a deep-seated grudge against Native Americans, stemming from personal tragedy in his past, which influences his every decision. Determined to survive and reach the safety of Fort Crane, the sergeant pushes his men through arduous desert terrain and hostile territory, often making harsh and ruthless choices that begin to create tension within the ranks.

As they journey on, the troop encounters various challenges that test their endurance, loyalty, and moral compass. Vinson’s aggressive leadership style leads to internal conflicts and forces each soldier to confront their own principles and fears. The sergeant's obsession with vengeance risks not only the mission but also the lives of his men, raising doubts about his fitness to lead. Escalating pressures bring underlying conflicts to a boil, setting the stage for a dramatic confrontation that will determine the fate of all involved.