Takayama and his friends are assigned to the Public Safety Force (PSF) under care of the Fourth Peacekeeper Squad Leader, Nana Iida. They observe as the PSF squad is deployed as a bomb is supposedly planted in the Yokohama Station. The four are assigned to keep guard and help at the Tokyo station, much to Sakurai's disappointment. The perpetrator notifies the defense force that actually the real target is the Tokyo station. They want ¥100 million in exchange for the disclosure of the bomb's location. Takayama and his friends are given the chance to search for the bomb before it goes off at three. They search the lockers without success. Iwaizumi suggests they search in the place they would least expect, a dog carrier at the lost & found center. They close off the area and Sakurai attempts to diffuse the bomb with Takayama's help. Sakurai uses the liquid nitrogen from a restaurant to freeze the bomb's circuit with five seconds remaining. The perpetrator is arrested and Takayama is assigned to be the deputy squad leader.