Before the annual class field trip, Miyabi and her friends steal the school's trip money and blackmails the English teacher, Mr. Sakurada, into luring Eikichi to a fake "underground girls club" with the stolen money planted on him. At the "club", Eikichi was goaded into drinking beyond his limits. Finally drunk, Eikichi was relieved of the money and thrown into a garbage pile on an unfamiliar street. He wakes and wonders why is he there?