Dowa kingdom is comprised of thirteen autonomous districts. Their peace is maintained by a single massive organization, ACCA. Deputy Chief Jean Otus of ACCA Headquarters Inspection Department is in charge of conducting ad hoc audits of the thirteen district branches. As he is about to head to Famasu District, however, ACCA's Five Chief Officers announce that the Inspection Department is to be shut down due to its perceived obsolescence in peaceful times...

Constable Rail, the rookie agent of ACCA's Badon branch, has a profound dislike for elite agents in ACCA headquarters and has it out for Jean. Meanwhile, feeling watched, Jean asks for his friend Nino's help. With rumors of a coup d'état circulating among the upper echelons of ACCA's hierarchy, Chief Officer Grossular announces at the Five Chief Officers meeting that he has obtained credible information about the coup.

Back from his Suitsu audit, Jean asks his supervisor, Owl, about the status of his transfer request. Unfortunately, it seems unlikely to be approved anytime soon. As Jean leaves to go home, Chief Officer Lilium offers him a ride, where he tells Jean that he is being watched. Jean soon leaves for Birra District for yet another audit, where he comes to learn a troubling truth...

In Rokkusu District for an audit, Jean finds Grossular visiting his homeland. Jean has an honest conversation with Grossular about his thoughts on the coup rumors before he departs. Back in Badon, the Inspection Department staff are abuzz with plans to celebrate the coming new year. Eventually, they decide to go to the party held at Jean's apartment complex. Jean welcomes the new year surrounded by his colleagues.

Various wheels begin to turn at ACCA Headquarters as the prospect of a coup looms ever closer. After receiving yet another cigarette in Yakkara, Jean heads to Pranetta where only rocks and sand can be found and the denizens live underground. Despite living under such harsh conditions, the people of Pranetta are full of hope that their mining industry will succeed.

With preparations for the ACCA centennial anniversary cereonomy underway, Prince Schwan goes to Badon to represent the Dowa royal family in his father's stead. Meanwhile, the five chief officers, senior officials, and district representatives secretly gather in ACCA headquarters' central meeting room to make their own final preparations for the coup. The day of the ceremony, the district office plaza is full of citizens. The future of the kingdom is about to be decided...