Two years ago, a secret investigator, Rei Majima, who was following an incident, suddenly disappeared. Strangely, immediately after that, the investigation was temporarily terminated by an order from the upper management. Junko Igarashi (Syota Kitano), a colleague of Majima, was suspicious of this incident and was secretly searching for an investigation with his subordinate Makoto Hayami (Yadai Natsume).
