Tetsuo Tosu never imagined that his daughter Reika would become a victim of domestic abuse. Suspecting her yakuza partner Nobuto Matori as the culprit, he resolves to probe him and his circle. While gathering clues in Reika's flat, the father discovers that she is not the first to suffer and that an even graver danger looms for her safety.
When Nobuto spots him, Tetsuo retaliates and kills the gangster in a sudden clash. With his wife by his side, he buries the corpse to avoid yakuza vengeance. The situation worsens when Nobuto turns out to be the crime boss's son, making Tetsuo and his spouse prime targets for the disappearance. They must use every trick at hand to shield their daughter from the ruthless yakuza and a relentless inquiry, and under the watchful eyes of a corrupt police force.
