Two friends are looking to earn easy money by gathering people to help them deposit a large sum of money in a fixed term of seven days, to live on the interests, which are higher the greater the amount deposited. This has immediate consequences on the lifestyle of the characters, who are increasingly ambitious. Portrait of the Argentine middle class in full hyperinflation, when financial speculation was the order of the day by the man in the street.
Catrasca (Jorge Porcel) is a man who works in a restaurant and in his spare time helps in a children's home. His problem is that he carries a family tradition that makes him cause catastrophes in his path, one of which takes his boss (Adolfo García Grau) to the hospital. Upon leaving the hospital, Catrasca is run over by Graciela (Graciela Alfano), the daughter of Professor Galíndez (Osvaldo Terranova). This is how he meets this professor, who has a formula that says he will be the salvation of humanity, so he is the object of persecutions by villains such as Dr. Linda Winters (Moria Casán).
Alberto and Jorge are employees of a refrigerator, who one day see a bus where several beautiful tourists flirt with the guide who drives them and think that being guides will give them many love affairs. They manage to meet with the owner of the tourism company and his partner (Frías Garmet and Gamarro Salas, respectively), who hire them immediately, promising them a quick promotion in the company. In reality, Frías Garmet and Gamarro Salas are planning a scam of great magnitude, and they need two unwary to indisting them.
Alberto, an employee of a car dealership, is commissioned by his boss to deliver a car that has been sold to a customer. Being a luxury car, he has no better idea than to invent an excuse to the new owner of the vehicle, delay delivery for the next day and use it to go out to have fun at night with his faithful friend Jorge. They both go to a revue theatre and, while witnessing the performance, the first vedette (Corina) faints. Then Alberto and Jorge pose as doctors, in order to meet Corina. As is to be expected, both decide to continue the deception with the passing of the days, causing the confusion to become bigger and bigger and harder to keep secret.
Alberto, Jorge, Ricardo and Tristan are employees of a shoe store, all are married and share the friendship also between their wives. The 4 friends, faithful to the rogue style of Buenos Aires, go out of their way to have love affairs with the beautiful customers of the shoe store, and for that purpose one day they decide to rent, secretly, an apartment to use as a "bulín". The problems begin from then on, as everyone wants to be the first to release it and then, successively, take turns for their adventures. As is to be expected, it does not take long for the first entanglements to appear, while their wives seem to begin to suspect the adventures of these four typical Buenos Aires chantas.