The story takes place at the time when Giacomo Casanova, probably the most famous conqueror of women, held the position of librarian at the Valdštejn castle in Duchcov. He was then a rather bored and grumpy old man who enjoyed only writing his memoirs and then a daily game of cards with the Count. But all that changed when Wallenstein's young nephew František Adam arrived at the chateau with his charming wife Valeria. She wanted to see the famous seducer with her own eyes. However, she was somewhat disappointed by the reality, as well as by the seducer's outdated views on love.