California, 1848. An invading army has defeated the few opposing forces and the territory has become part of the United States. Don César de Echagüe, an old gentleman, begs his son César to return from Europe, confident that he will know how to confront the oppressor.
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.
In a Spanish town that has been dying of thirst for years, some Americans who claim to be experts in oil prospecting say that there is oil. Considering the evidence of the treasure that encloses his subsoil, the owner will asks the shelter of one of the rich man of the town so that he decides.
