400 years after the nuclear war, Ark, a huge bomb shelter city. Anne Helm, who is lost in a power struggle with his half-brother, indulges in perverted sex as a rebellion against his deviant older brother's obsession. Then one day, he becomes caught up in a hostage situation carried out by a man outside the bomb shelter. A handsome man with cold eyes who appeared out of nowhere. ‘Outers’ are the polluted humans outside the ark. Anhelm is convinced that he is not an assassin sent by his brother, and instead persuades an outside criminal to kidnap him..