A drifter gunman arrives in the Mexican village of San Miguel at the border of United States of America, and befriends the owner of the local bar Silvanito. The stranger discovers that the town is dominated by two gangster lords: John Baxter and the cruel Ramón Rojo. When the stranger kills four men of the Baxter's gang, he is hired by Ramón's brother Esteban Rojo to join their gang. However, the stranger decides to work for both sides, playing one side off against the other.