The hero of the story is the writer Vladimír Tůma, who is invited to spend a month studying in a neighbouring country. There, the foreign office assigns him a guide, Irena Stepowska. The two young people are attracted to each other, but there is a catch - Vladimír is married, Irena is married. But as they say, opportunity makes the thief, so it's no wonder that Tůma has his work cut out for him, and Irena, too, sometimes recovers only at the last minute. And she doesn't even know that her husband is coming to visit her...