Rena, a decadent folk singer from Corfu, lives in Athens with her bouzouki musician brother Stratos, while her cousin Pepita di Corfu, is a major prima donna of popular tunes and lives in Rome with her fiancé Antonio. The shipowner Lampros Fokas, who had met Pepita years ago in Naples, invites her to a reception. She is unable to go, but a foxy agent presents Rena in her place. At first, the ruse is successful, and Fokas is charmed by Pepita-Rena. The things are getting complicated, however, when Pepita comes to Greece on vacation.

Μια φτωχή Ελληνίδα τραγουδίστρια δέχεται να αντικαταστήσει σε ένα πάρτι ενός εφοπλιστή την διάσημη Ιταλίδα ξαδέλφη της, αφού μοιάζουν σαν δυο σταγόνες νερό. Η απάτη της όμως δεν αργεί να αποκαλυφθεί.