Dakota Joe (Robert Hundar) is a feared gunslinger, dedicated to rent his revolver to kill. And for that reason arrives in a ranch at Mexican border , called by the landowner Don Carlos (Mirko Ellis), a rich man follower of President Porfirio Diaz and who attacks , rampage and pillage the peasants. Dakota is hired to kill the town doctor (Felix Dafauce), a good man who helps poor and unfortunate people. So Dakota Joe decides not to carry out the assignment, and plans with Pedro (Fernando Sancho), an outlaw who ravages and sacks stagecoach, now working "honestly" to the wealthy man, stealing all the money saved in the latter safe . Furthermore, Don Carlos's brother (Francisco Moran) uses an old law which allows owner his feudal right of first night on the bride (Marta Reves) called ?Ius Primae Noctis? after the wedding celebration, then occurs crossfire and subsequent vendetta. Meanwhile, there takes place Mexican Revolution with two bands, Emilio Zapata's supporters and Porfirio Diaz's followers. Dakota then decides to help the Zapatistas.