A former law professor turned amateur detective searches for a runaway daughter and stumbles upon a murder case in Kobe.

When a gun belonging to a police officer is stolen, it ends up in the hands of a student, who decides to use it on a yakuza who beat him recently. Now the police officer is hot on the student’s trail, and he’s determined to prevent the gun from going off.

Tokiko Enomoto finds out that her husband Kazuya, who mostly lives at an apartment near his work while she and their children live at home, has been having an affair with a live-in mistress, Ryōko, at his apartment. Tokiko tells her two sons, Tarō and Jirō, that she has decided to divorce their father. The children are shocked but understand their mother's position. Kazuya realizes the damage he has done and tries to remedy the situation.