On a bus heading to the Tokyo Cosplay Festival, cosplayer Miho Sakazaki becomes entangled in a series of unfortunate events. It begins when a stalker targets her and robs her wallet, quickly escalating as her body is subjected to repeated assaults. She is raped during a photoshoot and forced to masturbate inside the moving bus. Further molested by other passengers, she endures humiliating sexual acts within the bus. Miho's mind is consumed by despair as her body suffers one violent ordeal after another.