Kaneda Kazuichi (Michieda Shunsuke), whose grandfather is the famous detective Kaneda Kosuke, is a genius high school detective who uses his IQ of over 180 to solve murder cases full of mysteries. He is usually a passionate high school boy. After the incident, he will work with his childhood sweetheart Nanase Miyuki (Kamishiraishi Moeka) and Inspector Kenmochi (Sawamura Kazuki) of the Metropolitan Police Department's First Investigation Division to uncover the bold and meticulous tricks and track down the criminals' tragic motives. @哦撸马 (阿点)