Lala, who was forced into prostitution by her stepfather, runs away from home and meets an old man with a bad leg in the city at night. Lala, who is allowed to stay at the old man's house, starts doing prostitution for the old man who has no money and gives him money. Eventually, she takes on the old man's sexual disposal herself, and the two of them lived together in a distorted way. However, Lala is discovered by her stepfather...