Pointing to 2030, since the outbreak of the fourth World War, the political power of various countries has changed fundamentally, and as a result of the war, the surge of refugees has finally been allowed to enter Japan to make up for the labor shortage caused by the growing economy. At this time, a terrorist organization calling itself "individual eleven" carried out a series of extreme attacks, including refugee camps, foreign consulates and even the prime minister. Who is the new leader of the refugee resistance movement and the mysterious former member of the "individual eleven"? The many clues held by lesson 9 have also gradually revealed the shocking facts. Behind all kinds of terrorist activities and emergencies, there is a person operating everything in the shadow. what is the inside story of their planning? Can lesson 9 resolve the predicament and avoid a catastrophic civil war?