Cristina San Juan

A medieval alchemist (Klaus Kinski), knight (Harvey Keitel) and priest (Fernando Rey) mistake a flying-saucer alien for a dragon.

Three young friends who are on vacation in Spain and a NASA scientist must join forces to save themselves and the rest of the world from an alien menace.

Pedro Martín, a young and ambitious doctor, is studying the effect of cancerous cells on mice, but he has run out of mice in his laboratory, since they do not breed there, and he has no funds to purchase more of these expensive laboratory animals from the United States. Nevertheless, his assistant, Amador, informs him that he gave some of the mice to an old trapper, nicknamed “el Muecas”, who lives in precarious conditions in a shanty town outside Madrid, and that this poor man has successfully bred them with the help of the natural heat of his daughters. The incredulous scientist goes to the shanty town to obtain the mice. There, Pedro meets Muecas, Muecas's wife Ricarda and their two daughters Florita and Conchi. With the warmth of the women’s breasts, as the flirtatious Florita shows Pedro, the mice are able to reproduce.

A neurotic young New Yorker believes he has found his perfect match and desperately tries to win her over.