When Chief Constable Henry Potterton and his sister arrive at the peaceful country house of their late, lamented brother Bernard, they are astonished to find several scantily clad ladies wandering about. During Bernard's visit to a religious commune, his housekeeper turned the place into a "house of sin" and now she hastily tries to hide the truth. This leads to hilarious comings and goings, and when Bernard turns up alive, the household is thrown into further chaos.