The real estate agent Rolf Aebersold is trying to sell his aunt Martha's (Trudi Roth) house without her knowledge, but the ad has ended up in the section "Furnished rooms for rent". Nobody's fool, the tough old lady welcomes several lodgers, whose various problems are addressed by this new community, which is "almost a family". Unusual ideas result in confusion and mayhem in every episode. The main setting is the shared kitchen.