Yuki is a young, single mother supporting herself and her son, Haru, with a job as a bar hostess.

The story focuses on the widower Nemoto, ostensibly a businessman, who has one son, Kanichi, the hero of the title. Nemoto remarries; his new wife is a widow with a son and daughter of her own. However, Nemoto’s business turns out to be out a shady scam, and he disappears, leaving his wife to raise the three children alone. In order to support the family, she is obliged to become a bar hostess. She conceals this shameful employment from the children, but the truth comes out years later, after her daughter is rejected by her husband’s family when they investigate her background.

After the death of her husband, an elderly woman and her youngest, unmarried daughter are forced to sell their house to cover his debts and decide to move in with one of the former's children, each of whom is scarcely happy to accommodate.

Representing a destitute mother in an infanticide trial, a female lawyer attempts to convince a conservative prosecutor of the benefits of Japan's democratized post-war legal system.