Assault Unit [CAT] is an elite special forces team rigorously and thoroughly trained to crush the madness and violence of terrorists. Its strongest supervisor, Nanami, falls into the hands of the cold-blooded, sadistic Motoami, who captures her, overwhelms her consciousness with a powerful aphrodisiac, and subjects her body to brutal modifications in an utterly heinous and inhumane ordeal. Enduring relentless torture, her spirit remains unbreakably strong.