Wealthy inn proprietor Adlgasser supports his daughter Hansi and her husband Paul who is a composer with a loan, so he would be able to earn his living with a "real" profession. But instead investing in a big farm, the young couple decided to spend the money for the production of a new operetta he is writing. The husband`s friend Peter helps them pretending that Paul is the owner by sending farm products to the inn. But when the quality of the products are becoming low-grade, their father gets suspicious and decides to visit the estate to have a look upon of what is going on there. At the same time Peter`s aunt Adele is going to visit her nephew the farm owner to look after the progress he has made to marry his sweetheart. After arrival Paul is introduced as the custodian and Hansi as just married wife of Peter to aunt Adele and vice versa Peter as custodian the the father-in-law. How will this mess end up?