January 2118. Chief Inspector of the Criminal Investigation Department, Tsunemori Akane , receives a report of an incident on a foreign vessel – the body of Professor Milicia Stronskaya has been discovered. Behind the incident is a group known as the Peacebreakers, a foreign paramilitary organization and a new outside threat who are targeting the professor's research papers known as the "Stronskaya Document". Reunited with Kougami Shin'ya , a former fugitive from the Criminal Investigation Department, Akane grapples with a case that quickly escalates beyond their expectations. The Stronskaya Papers could reveal a truth that would shake Japan's government, and even the Sibyl System, to the core.
