Keiko, whom everyone calls Mama, narrates her story: she's a hostess on the Ginza, 30, a widow. She describes life's vicious cycle: acting cheerful around drunks, dressing and living well to convey confidence, needing money for these expenses and for her demanding mother and brother, and knowing she's growing older.

In feudal Japan, when any commerce with the rest of the world is strictly prohibited, an idealist appears at an isolated inn, headquarters of smugglers with stolen money intended to ransom his loved one forced to work in a brothel.