The son of a university professor falls in love with the daughter of an engineer, both are under 18. Soon she's pregnant. Looking thru the papers for encrypted ads that offer abortions, they find one by a Madame Lu, who is already suspected of doing abortions (abortions were illegal in Germany at that time) by the police. They ask, offer quite some money, but she refuses after taking the money. Looking for another place they are succesful, but the moment before the operation starts, the police raid the place. In the girl's case the Jugendamt (Youth-administration) takes over, the parents are informed, but the stress was too much, the girl has a mis-carriage. Now both are accusing Madame Lu of taking the money, but the police, after raiding her place, find themselves and almost everybody else very surprised over her work and background...