At the funeral of his schoolmate, the nearly-fifty-year old architect Jirí Mánek (Václav Voska) meets his former close acquaintance - physician Jarmila (Blanka Bohdanová). They both are still single. Jarmila has recently returned to Prague after years of work on the frontier. Jirí leaves for a business trip. As a conservationist, he is to grant permission for an adaptation of a Baroque château to office spaces. On the road, a pretty young hitchhiker named Eva (Ida Rapaicová) stops him. Eva is Slovak and her spontaneous behavior enchants Jirí. He thus does not mind making a short detour and takes Eva all the way to the luxurious cottage of her parents. A romance develops between the two people, so different in age and temperament.

A young, unmarried woman finds herself a "little bit pregnant" and she tries to hide this fact from her mother but it isn't long before the truth is obvious.

This exemplary "psychological drama" depicts the difficulties with which a new socialist mindset is born. Director Jiří Sequens warns against ill-advised marriages into the families of the defeated bourgeoisie, because the former royalty refuses to accept a man from a different social class. The heroes of this film will find out. The former owner of a pharmacy refuses to accept that his daughter has married a mere technical draughtsman. However, her father's hateful schemes cause the sensitive woman to attempt suicide.