Juan Antonio Arévalo

In 1916, while Europe was in the middle of First World War and Spain was enjoying the advantages of being a neutral country, eroticism was called voluptuousness and Senator Duke of Daroca, despite his ancient lineage, fell completely in love with a famous cabaret singer, Rosario "La Criollita", which was a scandal. At that time, it was doubted that decent women had legs - But this mystery was resolved a decade later, when the roaring twenties arrived and, with them, the sensual Lupe Cardoso

The frog test confirms Julita is pregnant. This is usually a great news. In this case, no. She is a victim of premarital sex, and he, Paco, a mechanic who, according to some theories of French biologist, explained by a podiatrist friend, will not be liable. Don Ramiro, the father of Julia, is a liberal-minded man, but when his daughter tells him that she will have a son who will not parent, seeking the solution of fatherhood in his gun regulation.

The musical group "Flor de Lis y los Dos del Orinoco" tours the fairs of the towns with their repertoire of old melodies. They arrive in Torremolinos and settle in a camping site. There they meet Johny, a cheeky "go-go boy" who lives off the land and, if possible, from foreigners. He joins them and turns them into a beat band. They dress like hippies and sing in English. Their new stage name is "Los Hippy-Loyas", and they present themselves to the public as a pop group from Liverpool. Their new life leads them to the most unusual adventures.

Julio and Timoteo operate a private detective agency that specializes in cases relating to partners who cheat on their spouses.

Juana and Francisca are serving at the Stevens house, an American couple. Both of them have a boyfriend, one is an egg-carrier and the other is a transporter with his own motorcycle. And both with a totally totalitarian and macho concept regarding male-female relations. The girls also have two American suitors assigned to the American Base of Torrejón, friends of their masters. Thus, without almost pretending, the two girls will find themselves in the midst of the jealous Spaniards and the beefy Yankees.