Young nerdy and horny Perico invents a time machine and uses it for sex tourism. He visits the cavewomen, ancient Egypt, ancient Rome and a Turkish harem, but also the future. However, his real test is in the present.

Rodrigo Díaz de Vivar, “Mio Cid”, is in love with Jimena, but the Count of Oviedo, his father, challenges him to a duel and is killed. He before him curses Rodrigo, that if he marries Jimena, he will lose his manly faculties. And, in fact, when he gets married, Rodrigo becomes effeminate.

In the medieval Castile, Don Tello de Buinesa, the boastful feudal lord, lives with his three sons and their beautiful wives.

Avila, early twentieth century. Pedro, a boy of nine years, accompanied by his tutor, comes to live in the house of Don Mateo, a teacher that from that moment will be responsible for his education. Pedro begins an almost familiar relationship with Doña Gregoria and Martina, wife and daughter of his master. The appearance of Alfredo, and roommate and colleague of studies, complete the circle of his emotional environment. Provincial life, relationships with peers and the special relationship between life and death instilled by Don Mateo, definitely will influence his future life.