California, 1840s. Wealthy landowner César de Echagüe, secretly acting as El Coyote, the legendary masked hero, continues his fight against the injustices and abuses suffered by the Hispanic population at the hands of the US Army.

Guzman, a rich U.S. landowner is forced to leave for a short time, leaving his pregnant wife alone in the ranch. That night, a group of bandits, believing that the house is empty, enters with the purpose of stealing. She surprises them and they kill her. When Guzman returns, he finds in the fingers of his dead wife the tie pin of the murderer. Then, with the help of a Portuguese and a Mexican friends,he begins his revenge.

A wagon load of convicts on their way to prison is being escorted through the mountains by a cavalry troop. They are attacked by a bandit gang, and only a sergeant, his beautiful young daughter and an assortment of seven sadistic, murderous prisoners survive, and they are left without horses or a wagon. The sergeant must find a way to get his prisoners to their destination while protecting his daughter, watching out for the still pursuing bandits and trying to determine which one of the prisoners was the man who raped and murdered his wife.