In 1661 Mexico, the Baron Vitelius of Astara is sentenced to be burned alive by the Holy Inquisition of Mexico for witchcraft, necromancy, and other crimes. As he dies, the Baron swears vengeance against the descendants of the Inquisitors. 300 years later, a comet that was passing overhead on the night of the Baron's execution returns to earth, bringing with it the Baron in the form of a horrible, brain-eating monster that terrorizes the Inquisitor's descendants
A pretty young Mexican girl returns to her hometown to make funeral arrangements for her beloved aunt, who has just died. Soon she begins to hear disturbing stories about the town being infested by vampires, and she eventually begins to suspect that her remaining aunt and the mysterious next-door neighbor may be involved.
A vampire uses two sisters to seek revenge from the last member of a family that persecuted the undead in Europe, but his plan is threatened by a man who knows how to destroy him with a peculiar piece of music.
A young woman inherits a mansion, only to discover that it is haunted by witches and evil spirits.
In Sierra Negra, graverobbers Barraza and Mendoza steal the coffin of Count Karol de Lavud, before heading to a hospital. Barraza sees a medallion upon the coffin's opening and demands more money from Mendoza. Meanwhile, Marta González, recovering from traumatic events, works as a nurse with Dr. Saldívar. When Barraza removes the wooden stake in order to steal Lavud's medallion, the vampire returns to life and begins a crime spree, hunting down Marta to marry her.
Mariachi with dual vocalists is broken up by a promoter who wants one of them as a solo act.
A failed pianist sells his soul to the devil in return for his becoming the greatest musician in the world. The catch: every time he plays he turns into a horrible monster.
A group of archaeologists break into the tomb of an ancient Aztec general, arousing the warrior's head and sending his undead servant out to take revenge on the careless scientists.
Rivalry and romance between the leaders of a male mariachi band and a female one.
The Legion Of Decent Decency is determined to shut down a nightclub where live rock and roll bands play and young people dance The Twist.
Wandering cowboy stops to help a widow out against the man who killed her husband.
Young pop singer finds his niche in the entertainment industry.
Young woman breaks her engagement to be married when an opportunity for stardom comes her way.
