What is the truth behind the 300 million yen robbery? Can a parent kill their own child?

Yokomizo, a police officer in the traffic police force, is looking forward to watching his son Kazuhiko grow up. However, Kazuhiko rebels against his perfectionist father and turns to delinquency. Kazuhiko teams up with his bad friend Teshima to rob 300 million yen from a cash transport truck. Yokomizo, who is investigating the case, is shocked to realize that his son is the culprit.