A long-distance bus is assaulted, and in the tragic event the wife and son of a well-known lawyer die. After three months of rest, he leaves the hospital, with only one thing in mind: to avenge the death of his loved ones.

In 1930s Argentina, dim-witted Rufino and Jacinto are hired as tough guys ("guapos") by political boss Malatesta to intimidate his opponents, rig elections, etc. However, the two men change allegiances when they meet the lovely Mercedes and La Mendocina, victims of Malatesta and his gang.