A young man who showed little promise while a high school student becomes a master detective, just like his grandfather.

Kindaichi Hajime is a high school student and a private detective with an IQ of 180. He solves murder cases that are riddled with difficult clues. Kindaichi Hajime works with his childhood friend Nanase Miyuki and Kenmochi Isamu. Kenmochi Isamu is now the chief inspector of the Tokyo Metropolitan Police Department.

Aoi has dropped out of high school and gives birth to a baby son with her husband Masaya. They live in Okinawa, the Southern island of Japan where they were both born. To make ends meet, she starts working as a night-club hostess. Masaya loses his job and cannot deal with the family’s responsibilities. Their immaturity and dependence aggravate the relationship and continuous fights lead to a social downfall. Aoi’s bond with her son sets her on a path to find solutions.