Mario Bartoloni is a Milanese employee of the Cartier chain who is offered an exchange of headquarters in Rome with his colleague Marini. In the agreement there is also the exchange of the house between the two colleagues. He arrives in Rome after a terrible journey, in which his car and suitcase are stolen, and he also forgets his coat in the taxi that had accompanied him to his new home. In the capital Mario furnishes his new apartment, but soon after discovers that the entire building is under eviction by the owner of the building, Countess Salviati. Finding himself homeless, he very insistently convinces his colleague Aldo to host him, who, to make him go away as soon as possible, always quarrels with his wife, even when Mario wants to sleep, and in the end he coalesces with her, although they never go away. he agrees, and asks her to seduce him, so that Aldo pretends to surprise them, making Mario feel guilty, and so he manages to kick him out of the house. Mario then tries to seduce his colleague Elvira, wealthy but ugly, to attack the hat, discovering however that she already has a rough Roman lover.