Tailor Simon from Romadia catches the attention of the dragon princess Helena when he repairs her court poet Kryšpín's torn trousers by cutting them. He becomes a hero when he kills seven flies with one swing. Armed with the reputation of a warrior, he sets out into the world to seek his fortune. In neighboring Drabia, he competes with a giant in stone crushing and high-jumping. He defeats the giant with his cleverness. In a nearby town, he mocks a tax collector and finally decides to win the princess that King Rudolf promised to the one who can dry her tears. And clever Simon does not hesitate.