A town is being terrorized by a gang of marauders led by Bill Anderson, a clever bandit boss. The town's leadership is deciding to do something against the problem, but it does not believe bringing in the military will be a solution. It is agreed upon that they will request help from the well-known Pinkerton agency. At the same time, Ringo, a gunslinger, is chasing after the bandits. He suspects a deeper-sitting conspiracy than random bandit assaults. He joins forces with the newly arrived under cover Pinkerton agent, to uncover a plot between a local businessman, the Mexican revolution and bandit's heist loot of gold. But the bandits have long planned to move on. Disguised as Mormons, they are moving west to start a new life of farming during the day and robbing stage coaches at night. Ringo and the agent track them down....

After spending many years in prison, Gary returns to Paso Bravo, where thugs burned his ranch killing his wife and daughter. Gary seeks revenge, and also finds a people who live terrorized by a group of gunmen led by Acombar. This situation causes Gary skip to face action this gang of murderers.

Franco and Ciccio mosey into the Mexican border town of Santa Genoviefa. Both are dressed in ponchos, one rides a small mule, one a large one. They are gun salesmen, peddling their wares from town to town.

Shenandoah (Steffen) works his way into a band of highwaymen led by Rojo (Armando Calvo). His initiation consists of hunting down and killing a member of the gang who has 12 bullets while he is only given 2 bullets. When the bandits attempt to rob a wealthy rancher, whom Shenandoah knows, he warns him. The outlaws begin to suspect they were betrayed and commence to rough Shenandoah up. Shenandoah then reveals his true reason for joining the gang; one of them killed his wife and he is there for retribution.

A former singer lives alone with her fortune - and with her nephew, Fernando, a low character to whom she refuses to lend more money. Elisa leaves prison and starts a new life as a personal attendant to the aging singer, using her knowledge as a former nurse - a profession she can not return to. Fernando meets Elisa, and together they plan to poison the lonely woman, and use her money abroad. They plan their alibis well. But those who kill by the sword will perish by the sword.

Merritt Blake, an American architect who is travelling in Spain, contracts the services of beautiful local interpreter Mari Zarubia. Sensing there may be something more going on, her jealous lover is not happy about the arrangement.

California, 1847. The territory is about to be incorporated into the United States. Parker, the new governor, is a cruel man who believes that the time has come to get rich regardless of the means, but he will soon find a mysterious opponent driven to end his tyranny.