California, 1848. Un ejército invasor ha derrotado a las pocas fuerzas opositoras y el territorio se ha convertido en parte de los Estados Unidos. Don César de Echagüe, un viejo hidalgo, ruega a su hijo César que regrese de Europa, seguro de que él sabrá cómo enfrentarse al opresor.
Rangers Tex Haines and Dave Wyatt track a killer known as the Whispering Skull. In the wake of the Skull's slaughter, a band of thieves takes advantage of the fear he's brought to town.
California, 1847. El territorio está a punto de ser incorporado a los Estados Unidos. Parker, el nuevo gobernador, es un hombre cruel que cree que ha llegado el momento de hacerse rico a toda costa, pero pronto se topará con un misterioso oponente decidido a poner fin a su tiranía.
Brand controls the only road to the cattle market and is charging exorbitant rates. Tim and Chito rob Brand to recover only their overcharge, but accidentally end up with all of Brand's money......
The beautiful owner of a silver mine in Mexico asks an employee for help when bandits keep robbing her shipments.
Ken, sent to investigate cattle rustlers, poses as a peddler during the day but the Masked Rider at night.
A young man has been mutilated into a cyborg warrior, known as Bovine Rider, by the intergalactic alien council called FORESIGHT. FORESIGHT instruct him to battle another rider to complete his training so that they can have a warrior to control and lead Earth into their schemes. Chaos ensues as Bovine is challenged over who he is, and what he is supposed to be.
California, década de 1840. El rico terrateniente César de Echagüe, que actúa en secreto como el Coyote, el legendario héroe enmascarado, continúa su lucha contra las injusticias y los abusos que la población hispana sufre a manos del ejército estadounidense.
Alberto and Leonor have a son, they find out that one of the masked men who attacked them was her nephew, things get difficult for them when they find out about a testament left by her grandmother.
The story concerns a fierce struggle over water rights. Complicating the plot is the presence of a masked desperado who is systematically killing off local ranchers.