Tetsuo Tosu is shocked to discover his daughter, Reika, is a victim of domestic abuse at the hands of her yakuza boyfriend, Nobuto Matori. Determined to uncover the truth, Tetsuo delves into Nobuto's world, only to unravel a darker truth about his daughter's situation. In a desperate confrontation at Reika's place, Tetsuo faces off against Nobuto and tragically ends his life. With the help of his wife, Tetsuo buries the body to shield their family from the yakuza's wrath, not realizing Nobuto is the mafia boss's son. Now marked as suspects, the Tosu family must outwit the mafia's probing eyes to safeguard Reika from further danger.