A young doctor, Spyros, falls in love with a poor singer, Eleni, who is under the extortionist urge of her fiancé Peter, who is unbearably pushing her to marry a wealthy old man so that he can pay his debts on paper. Spyros is driven for his sake by separation from his spoiled and wealthy fiancé, Katerina, and the usual problems in such cases begin. In the pre-existing class differences, the hatred of the people in his circle, who do everything they can to prevent it, is added. Spyros, however, is totally determined to cope with life the way he thinks - and eventually succeeds.

Miss Fanouria Kalafati, also known as Ritsa (Sappho Notara), is a very intelligent doorwoman, to whom everyone runs to tell them the truth and advise them on their love affairs. Of course, she interferes in their lives at every opportunity, as in the case of a singer, Zozefina, who sets her up with a middle-aged earner, Michalakis, in order to make her suitor, Sakis, jealous and stop postponing the wedding. When she realizes that her niece is in love with a young man, she rushes to grant them her wish, while she herself still loves Antonis, her youthful love who had emigrated to Australia. A lottery ticket, given to her by Michalakis, makes her rich overnight, so she buys the penthouse of the apartment building and houses her love, since Antonis returned from Australia the same way he left, that is, penniless.

A nice but poor medical student, Petros, lives in a poor courtyard with a down-and-out musician, Antonis. His fellow student Eleni is in love with Petros, but he has no eyes for anyone but Aliki, a girl from an upper-class family, whom her parents wish to rehabilitate with a son-in-law of their own class.