The killing of a political leader shatters the peace of a small Mexican town. MANCO, the brother of the murdered presidential candidate knows the killer and sets out to exact his revenge. Arriving to investigate the assassination is special agent AMIGO from the Mexican Intelligence. Amigo quickly strikes up a friendship with a local hotel owner who fills him in on the town's seedy characters and gives Amigo a Single Action revolver. The stage is set for Amigo and Manco to join forces and take down the powerful and dangerous CAMARO family responsible for the murder and the corruption of the town. To gain the confidence of Camaro, Amigo breaks his top henchman out of jail. Amigo is welcomed into the Camaro gang. Camaro soon discovers Amigo's connection with Manco and plots to take him out. The situation reaches a boiling point on the US/Mexican border when Amigo, Manco, and Camaro meet for an old-fashioned Western shootout where truth and justice prevail in one single action.
In this remake of the 40's classic, two lovers murder each other, leading to an investigation and the closing of the Saln Mxico, a famous place where people used to go to dance before WWII. The police investigation leads to several flashbacks about the life and death of a low-life dancer named Mercedes (Maria Rojo) and her lover.
In a small town where nothing ever happens, the inhabitants learn about a place at the edge of the earth where money and women are abundant. When they see the oportunity to go and work illegaly in the United States, they jump at the chance. Meanwhile Andrés and Gregorio go to the town searching for treasures and they only find Matilde, the rest of the women in the town left, tired of waiting for the men to return.