In a mansion block in Knightsbridge a gang of middle-aged biddies decide to brighten up "the dullness of the tea time of life" by staging a series of robberies on furriers then donating the proceeds to charitable concerns. Terry Thomas as a retired army officer leads the gang which includes Athene Seyler and Hattie Jacques on a series of capers that nearly go awry when their maid Billie Whitelaw an ex-con and also a resident of the block falls for a police officer.