Giannis Messed Up (1964)

Original title: Ο Γιάννης Τα Έκανε Θάλασσα

A retired General sends his nephew, Giannis, to Athens so to settle into a job. One day, Giannis discovers that a stolen suitcase which has given him to guard contains something suspicious. The naïve Giannis decides to hand it over to the police. The rich owner of the suitcase, is looking for a clever husband for his daughter Kathy, and Giannis seems to be the most appropriate person.