(c)2020 "The Legacy of Dr. Death: Black File" Film Partners
One day, Detective Inukai and Takachiho recieve a phone call from a boy saying "My dad got killed by a bad doctor."
Through the investigation, they find out an consecutive suspicious deaths, and all of the victims are patients in the terminal phase of their diseases. Behind the deaths, there comes up a doctor named "Dr. Death" who euthanizes terminal patients by their requests through dark website.
Meanwhile, Detective Inukai's daughter who suffers from a kidney disease also gets in touch with Dr. Death...!!!