Romantic musical comedy, produced in 1968.

The German prince, Jan, comes to Greece for a vacation and is hosted on the yacht of a famous prima donna. One morning - despite the firm objections of his entourage - he takes a helicopter ride over Athens. At Mount Lycabettus, he spots a beautiful tour guide, Elena, and captivated by her radiant presence, he decides to meet her in person, pretending to be a simple tourist. While he enjoys the Greek antiquities as a member of Elena's group, his disappearance has mobilized the secret services and the ambassador of his country. However, until he is discovered, Jan and Elena have fallen in love and have experienced wonderful moments together. The prince is discontented when they find him and refuses to return to his duties, but Elena convinces him that it is better for them to part ways as they belong to two completely different and incompatible worlds.