Grammar school teacher Bláha hurts himself in pursuit of a red lizard, and is lying unconscious in the lonely house of Santrucek family. The postman, who found Bláha's coat and hat in the water, announces to everyone in town that the professor has drowned. But, the venerable citizens are at that moment more interested in the theatre group with the beautiful guest actress Eva Gazdová. They demand a change of repertoire and manage to persuade the theatre manager to have the group play the musical comedy The Red Lizard instead of an established play.

Sunday at spa. Husband Štovíček is observing what's going on. Mr Štovíček would like to have fun at the swimming pool, but can not because his wife wants to go on a trip with a friend of hers.