Komiya (Tatsuo Saitō) is an affluent, respected and good-natured professor of medicine at a Tokyo university. He has a wife, Tokiko (Sumiko Kurishima), though they are without children. His niece from Osaka, Setsuko (Michiko Kuwano) comes for a visit. A liberated young lady who smokes and drinks, Setsuko finds Tokiko's attempts to interfere with and control her behaviour annoying.