About the Russian dancer Yolanda who arrives in Mexico with her company in 1909. There she falls in love with the young cadet Julio. However, the influential Carlos opposes this love. He wants Yolanda for himself and threatens her with a possible deportation to Siberia if she rejected his romantic...
Landru, a French businessman, arrives Mexico with the idea of promoting their fighters, what nobody knows is that besides Landru promoter and fighter is a mad scientist who seeks to alter human genetics mixing it with the animal to make stronger and fiercer to their gladiators.
The Sheriff of a small town, in his search of a robber bank, gets to another city, working undercover. There, he tooks the place of man recently killed, and falls in love with his widow.
Blue Demon and pals square off against the Black Hand's army of super powered midgets. Five luchadores (Blue Demon, Mil Mascaras, El Medico Asesino, La Sombra Vengadora, Tinieblas plus Black Shadow) face off against a mad scientist and his army of powerful wrestling midgets.
Hurricane Ramirez is the new manager of the arena and champion of the ring. He must battle with The Prince, a ruthless criminal who will try to end with his life.
Ex-con presides over an underworld court trial in an abandoned warehouse to determine the fates of some accused "squealers." Flashbacks reveal the facts of the case being tried.