A poor man, Angelis Katsavidis, and his hard-of-hearing friend Stratos leave their village and come to Athens in search of a better life. Their local MP, Lefterakis Laosotiras, is unable to help them find work, but Mrs. Elpiniki Katsipodiu hires them as unskilled workers in her art agency, which also operates as a private investigation agency. However, while she assigns them to follow an illicit couple, she actually wants to throw dust in the eyes of a police officer who suspects her of running a network of high-class prostitutes. Aggelidis and Stratos will experience several amusing situations, but they will also meet the "golden-hearted" Kleio. When her wealthy uncle dies, she hires them to work in the family business she has inherited.

A good-hearted guy, Romeos, who thinks he's a big "Kazanova", comes out of the madhouse. At the suggestion of his cousin Leon Karfis, he goes on holiday to an island where he is continuously under the watchful eye of a nurse of the madhouse, Telemachus.