Cayetana, her boyfriend Paco and Venancio, her foster brother, commit small thefts and, from time to time, spend a few days in jail. Until they meet with Federico, a thief who has traveled abroad and convince them that using European methods success is guaranteed. Paco then decides to act scientifically and seizes a hospital surgical equipment. When they want to realize, poor Venancio is forced to give an injection to a dentistry patient and, even worse, Paco has to pull out a tooth. And all that, before entering the operating room
Elenco: Tony Leblanc , Concha Velasco , Alfredo Landa , José Sazatornil , José Bódalo , Manolo Gómez Bur , Margot Cottens , Tomás Blanco , Rafaela Aparicio , Erasmo Pascual , Paquita Torres , Antonio Mingote , María Luisa San José , Ignacio de Paúl , William Layton , Beni Deus , Fernando Nogueras , Charles Stalmaker , Ana María Custodio , José María Tasso , Claudia Gravy , Goyo Lebrero , Xan das Bolas , Elsa Zabala , Azucena Molina , Emilio Rodríguez , Pastor Mata , José García Calderón , María Antonia Redondo , Juan Antonio Peral , Aníbal Vela Jr. , Alfredo Santacruz , Lorenzo Robledo , Josefina Serratosa , José Bastida , Cris Huerta , Rafael Socorro , José Rodríguez Quevedo , Ángel Menéndez , Fabián Conde , Roberto Cruz , Lola Gálvez , Rafael Hernández , Juan Ramón de la Cuadra , Takedo , Mitsoya , Esperanza Sierra , Antonio Orengo , Pedro Rodríguez de Quevedo .