Én és a kisöcsém

The story

Kató Kelemen is asked by her father to go to his office and welcome an important business partner of his. When Mr. Andersen arrives he assumes Kató is a secretary and instructs her to deliver a letter. He's about to travel to Venice with his nephew who he has never met before. Since Kató falls in love with Andersen at first sight, she decides to dress like a boy and pretends to be the nephew.