The film consists of various plots, which are as follows: •
Mad scientist Landru (Jean Safont) subjects himself and his two assistants to experiments that turn them into beasts, and they test the results by facing a couple of
luchadores, Huracán Ramírez and Tonina Jackson, in a series of matches. Fernando Torres (David Silva), the man who wrestles as "Huracán Ramírez", is in financial difficulty, leading him to agree to participate in Landru's matches. • Fernando's son Pancho (Pepe Romay), a college engineering student, works in an auto repair shop during the semester break. He makes friends with Gina (Karina Duprez), the owner's daughter, incurring the wrath of the shop's boss Hernández (José Luis Caro), Gina's rejected suitor. • Fernando's daughter Margarita (Titina Romay) begins a pop singing career under the name "Margot de Córdova". She is discovered in a record shop by Pepe Chico (Carlos Piñar), the son of a network head, who gets her a spot on a television show on the network, but lets Margarita think that he's just Pepe Chico's "friend". Margarita's relationship with Pepe causes the jealousy of Margarita's friend and suitor, Pichi (Freddy Fernández). • Obnoxious
gringa Mary (Carolina Barret), who has attached herself to Tonina Jackson. She loans him money to pay the wrestling arena's debts, and declares herself owner of the cafe run by Fernando's wife Laura (Carmelita González) as a result. When she attempts to change the cafe to her image, she causes a conflict between herself and Laura. ==Cast==