Businessman Lalakis Makrykostas (Vasilis Logothetidis) is married to beautiful and much younger Popi (Ilya Livykou), who's being courted by Nikos Koutroumbas (Lampros Konstantaras).
While Lalakis is away on yet another supposedly business trip, it is revealed by a series of coincidences that he's on a romantic getaway to Thessaloníki with his mistress.
By coincidence, Lalakis and his mistress, Lolota (Rena Stratigou), have missed their train to Thessaloniki and are spending the night at the station master's home as well.
The couples eventually retire for the night; Popi and Nikos drive back to Athens in the middle of the night, whereas Lalakis, eager to return to Athens in order to confront Popi about her infidelity, is forced to make his way back by horse and carriage and public transport.
When Popi starts asking him questions about his stay in Thymaria, there's a knock on the door; it's the station master returning Lalakis' wallet, which had fallen out of his pocket the night before.