Baron Dolanský is deeply interested in eugenics, he knows what happens when the same plants are crossed over and over again, and he rightly concludes that it will be no different with people. He is a widower and has no descendants, so his nephew Max must provide the future heir to the coat of arms. Fear of possible degeneration compels the Baron to provide the family with new blood. On the other hand, it must not be just anyone - he must at least have certain means. The most serious candidate is the poor but beautiful Madla Lísková, but she should receive preliminary training. The nobleman demands that she stay at his castle for a year. The girl's mother readily agrees, after all, her daughter has a secure future ahead of her. How will the efforts of the Czech Pygmalion turn out?

A comedy of misunderstanding and a love square