Office lady Kozue is gang-raped by multiple men inside a bus, and in a state of confusion, she wanders into a forest. Ahead lies a mansion where harsh torment and training await her. Bound in chains, she is violently fucked; subjected to dominant-submissive sex in outdoor baths; paraded like a female dog and assaulted in a park with squirting sex. Kozue's mind gradually distorts, losing all sense of self. Reality and dream blur, until the line between them fades completely.