A graceful prince of a far away planet is forced to abandon his reign in order to escape from the perfidious Nitron, "the vampire interplanetary" that means to conquer the universe. When damage forces the spaceship in which he is traveling to the Earth, a girl aboard his craft confronts two generous champions of freedom and autonomy, "Mysterious El" and "El Volador", who are Masked Wrestlers from Bolivia. They take great care that she is familiarized with the land habits of earthlings, including making love and drinking beer. The prince learns from his new friends all the secrets of a galaxy ring, which can destroy all evil as well as burn rocks. Fearing that they will be attacked by the enemy, the girl decides to hide herself behind the identity of the earth singer Larossa, who had died a year previous.The plot is discovered by Nitron, he also learns that the galaxy ring has more power on the Earth. He recognizes that he can be assisted in his war by transmissions on TV, which turn people into zombies. Larossa risks being overwhelmed when she confronts two of Nitron's dead, but with the aid of the two Masked Wrestlers, they duel and come out victorious. The dead woman they fought was none other than Larossa, who had died a year previous. By now sure that nobody will be able to threaten the galaxy ring, they all decided to return to their own planet far away. "Mysterious El" and "El Volador", both admirers of the girl, watch the spaceship go away and then they begin to wrestle and some corny metal music signals the end.The directors Arnaud and Lopezreal modernize the sci-fi classics, interlacing them with Mexican fantasy and Wrestling ethics, taking some ideas from the Americans, and also from horror (the Nitron, like every vampire that you respect, is made out to be a blood thirsty monster and can die when in contact with water). They also put a lot into the action but the characters are dull. The product that they manufacture is directed at young people, but it can also be appreciated also by those adults, who in the years 1950-1960, got very passionate with films of Bert I. Gordon, Tôhô, Corman, Hammer, El Santo, and their numerous imitators.