Mei Kamisaka, a pure-type office worker who moved to a new city. The place she moved to was a dilapidated apartment where old men living in garbage rooms resided. When she worried about causing trouble to the neighborhood, she was forcibly violated by an old man who got angry in reverse. Mei, who couldn't escape no matter what, continued to be tormented in the dirty room of the apartment, and in the end, she fell into the swamp of sexual pleasure without resistance to the stench and the dirty room, and turned into a meat toilet for the old men...