When Sokichi stops providing his long-time lover Kikuyo enough money to pay for the care of their three young children, Kikuyo leaves the children with Sokichi - and his very surprised and angry wife Oume - and disappears.
Two detectives are tasked to investigate the murder of an old man, found bludgeoned to death in a Tokyo rail yard.
Masako, a five-year-old girl living, gets a scratch on her finger. After that, she suffered horrible spasms. The doctor checks on her and arrives at the conclusion that she has tetanus. Her parents have to bear the sufferings of their child. The once peaceful family has changed completely.
