A small, poor village in Mexico is repeatedly terrorized by a gang of bandits led by the ruthless Calvera. Unable to endure the constant plundering and oppression, a group of villagers decide to fight back. Lacking skills in combat, they venture north of the border to procure arms but soon realize what they actually need are men skilled in warfare. They encounter Chris, a veteran gunslinger, who listens to their plight and agrees to help for a modest fee. Sensing the gravity of their situation, Chris sets out to recruit an ensemble of six other gunmen, each with their own unique set of skills and personal demons.

Together, the seven men return to the beleaguered village and begin to train the villagers, not just in defense but in reclaiming their spirit against subjugation. As bonds are formed and the seven learn of the harsh lives of the villagers, their fight becomes one of honor rather than just a simple contract. The group works hard to fortify the village and prepare the locals for the inevitable confrontation with Calvera and his gang. Meanwhile, the looming threat of the bandits' return hangs over them all, foreshadowing a battle that will test the courage and resolve of every man involved.