Young Alfred urgently needs financial support for his household goods business. His eccentric uncle Phillip will only provide the necessary change if he manages to smuggle him into an insane asylum so that he can impress his friends with hair-raising stories. Alfred is overwhelmed, but his friend Kissling has the idea that saves the day: they pass the "Pension Schöller" off as a mental asylum and smuggle in the unsuspecting Uncle Phillip. From then on, he thinks all the guests are mentally ill...