A popular and beautiful politician plans to expose the evil-doings of a multinational corporation. Hoping to silence her, the corporation's top executives decide to hire the most incompetent detective they can find to act as her bodyguard.

In a small provincial town on the Spanish coast, a conflict arises between prostitutes and a group of devout women, annoyed by the presence of prostitutes in their locality. The tension is increasing and the prostitutes are asking Carmelo, the local pharmacist, to intercede for them. He, who goes out with Asunción, one of the women facing the heteros, refuses. To convince Carmelo, prostitutes force him to have sex with them. Due to the pleasure of this experience he changes his mind.

Three friends who work together in an office have to stay in a bigger city without their wifes. Therefore they want to take the chance and have some fun joining three girls from Sweden.

During the Civil War, corporal MacDonald from the Cavalry Regiment, is entrusted with a large shipment of gold. Along with the men accompanying him, Mac Donald decides to keep the cargo, and hides it for later rescue. He is the only one who knows where it is buried, but is killed in a skirmish. Now, Lieutenant Pollock will have the mission to find out where he hid the gold

Karina arrives to a mansion to work as a governess of a group of singing children. She must take care of their education, and she decides to use music to teach them. Meanwhile, the record company where the children work is busy with another project. Their biggest star, Marta, is getting ready a song to represent Spain in the Eurovision Song Contest 1971. Carlos, the composer of the song, titled "En un mundo nuevo" ("In a new world") meets Karina in the mansion and starts feeling affection to the girl, something Marta, who is Carlos' girlfriend doesn't like at all. She is also jealous of Karina for her musical abilities, and when one day Marta catches Karina with Carlos singing a song composed for the governess, she gives him an ultimatum, if Karina doesn't leave the mansion at once, she will break her contract with the record company and won't sing "En un mundo nuevo" in the Eurovision Song Contest...

Raúl Arévalo and Miguel García seem like a drop of water to another, but there the similarity ends. Raul is a famous singer, womanizer, despotic, cruel and millionaire. Instead Michael is an honest worker, cheerful and loving who enjoys the simple things forward. Fate will know them and life will never be the same for either.