Incest.

Martin Hollmann, a young gardener meets his significantly older wife's daughter from her first marriage. Liesbeth Kröger is from his generation and they both get along well straight away. Shortly after his wife's death, Martin brings Liesbeth into his house as a housekeeper, and they both fall in love. The couple live together and soon decide to get married when Liesbeth becomes pregnant by Martin. But now the tragedy begins, because when registering at the registry office, Martin and Liesbeth, in the form of a strict bailiff, are officially declared that they have committed incest in accordance with Section 173 of the Criminal Code.