A shy and reluctant Theology high school teacher in Thessaloniki-Greece decides to solve his erection problem by consulting a doctor for the first time after two years. The doctor just replies that the problem can be solved by R20. R20 is played fabulously by Dimitris Starovas. He is a former psychologist (now operating his father's import export meat business) that uses company trucks as moving brothels. R20 actually stands for: "Russian 20 years old" which eventually means that Lakis Lazopoulos has to cheat on his wife to solve his problem.
Having been married for seven years, a tourist office director and his well-known television presenter wife, Alekos and Efi Fotiou go through a crucial phase. Dedicated to their careers, they rarely meet, and when thy actually achieve it they always end up quarreling. The only family they have, their uncles, suggest they have a baby. She finds it a good idea, but Alekos thinks that they won't be able to raise a baby properly. This dispute brings them one step closer to divorce, which now seems the only solution, especially when Efi starts to believe that Alekos is flirting with Tzouli, and Alekos suspects that his wife is having an affair with Dimitris. When it is finally proved that none of this is true, and, actually, Tzouli is planning to marry Dimitris and Efi's aunt Dimitris' uncle, they all get reasonable, the couple gets over its crisis and they live happily ever after, together with their newborn child.
Fourtounakis’ daughter, Katerinio, is forced to get engaged with a brutal Cretan, Skandalakis. But the return of Manousos Vrontakis from Athens and his flirtation with the girl leads to a great romance, without them knowing that they belong to families who are longstanding enemies.
Aristos, a ship worker and singer at a popular tavern in the evening, is preparing to marry a poor girl, Maryio. One night at the shop comes the rich Elena, which hides the truth about her financial situation, he falls in love with her and separates him from Maryio. However, after an accident, the real identity of Elena is revealed, as is the fact that she is betrothed. Elena, seeing the misfortune she has scattered around her, pretends that Aristos was just an adventure for her and lets him return to Maryio.
Rena’s father insists on marrying her off to the son of a shipowner. Rena, however, doesn’t even want to hear about it, so she runs away and disguises herself as a boy named Pipis. As such, she meets a poor fisherman, Lefteris, and helps him on his way to Ioannina.
Liza falls in love with one of her father's employees. Her socialistic ideas about employment drive her to collide with her father and the sociopolitical status of the time.
Jenny Skoutari, a student and the daughter of a party local commander Kosmas Skoutaris, gets use to visit the private library of - her father's political rival - the shipowner Miltos Kassandris. Kassandris prepares his nephew - and a childhood friend of Jenny - Nikos Mantas, as a candidate for the next election. Mantas' rival has a lead, and is backed by Skoutaris, who is facing financial problems. So Kassandris decides to force Jenny to marry his nephew with a fake marriage, while at the same time financially breaks down her father in order to secure the election of his nephew. This marriage, however, will lead to unexpected situations between the couple..
Katerina, a poor girl, finds a job as a secretary and falls in love with her boss on a trip to Rome.