"Hoshino" was traumatized by the false accusation of a criminal caught in a sting investigation in the past, but decided to become a decoy in order to overcome his past self. A decoy investigator who disguises himself and rides the same train every day, but is sexually preyed on by perverted bastards, gang-raped by gangs, and becomes an outlet for sexual desires of perverts! Divided into walls, filming roles, and molesters, they are prey to clever enclosure molesters using aphrodisiacs! Deprived of freedom in a closed space (train), restraint, deep throat, gangbang... Devil's deeds are done.
