In the overthrow of the Mexican government, Beatriz’s father is executed and her home destroyed. When handsome Don Dodolfo Solórzano proposes, Beatriz ignores the rumors surrounding his first wife’s sudden demise, choosing instead to seize the security his estate in the countryside provides. She will have her own home again, no matter the cost.

As the daughter of a rancher in 1840s Mexico, Nena knows a thing or two about monsters - her home has long been threatened by tensions with Anglo settlers from the north. But something more sinister lurks near the ranch at night, something that drains men of their blook and leaves them for dead.