University professor Kenzo Oshima (Hisamatsu Nobumi) is stabbed to death by someone in an alleyway in Tokyo, and Inspector Totsukawa (Takahashi Hideki) and Detective Kamei (Takada Junji) of the Metropolitan Police Department's Investigation Department's Investigative Division 1 arrive on the scene. According to the first finder, the victim died after saying "Totsukawa...". Oshima was famous as the leading authority on mitochondria, but he had never met Totsukawa... Totsukawa is puzzled, but begins to investigate, and discovers that a suspicious man has been caught on a security camera near the crime scene. Seeking a clue, Totsukawa and his colleagues interview associate professor Hayase Yumi (Kurotani Yuka) and the president of a biotechnology company, Koji Nakazono (Nakamura Shunsuke), who was assisting them in their research, to find out what happened. They find out that the man caught on the security camera is none other than their childhood friend, Akaike Shogoro (Matsuo Satoshi).
Mari is a female university student. She takes part in an experiment held by popular VTuber Sophia. When Mari arrives at the place where the experiment is to be held, she notices the place looks like a prison. 12 people participate in the experiment and they are assigned roles of prisoners and prison officers. The experiment takes place over 7 days. Mari is assigned the role of a prison officer. The experiment turns violent.
1980년대 후반. 19세 간타는 일용직 노동으로 번 돈을 술에 다 써 버리고 집세도 낼 수 없는 생활을 보낸다. 남을 피하면서 외롭게 하루를 보내는 간타였지만 직장에서 전문 학교생 쇼지와 친해진다. 그러던 어느날 고서점에서 일하는 야스코에게 반한 간타는 쇼지가 주선해 그녀와 친구가 되는데….
