This drama is adapted from the comic of the same name. It tells the story of a quirky former lawyer with special experiences, now a professional detective specializing in inheritance, Haijiang Nanao (played by Akaso Eiji). He has a stubborn personality but uses a high degree of intellect as a weapon. He works together with his partners with rich personalities to challenge complex inheritance issues. While respecting the will of the deceased, he uses vivid reasoning to easily unravel the family disputes and hidden truths surrounding the inheritance.