What awaits Koharu is an elaborate and brutal trap designed to break her. Rope bondage eats away at her reason and drags her toward surrender through orgasmic pleasure. Known as the strongest female agent, unbeatable in gunfights and hand-to-hand combat, Koharu finally lets down her guard after falling in love with a young adult man. Her happiness collapses when the criminal organization Black Dog kidnaps him. She storms in alone, is captured and subjected to extreme brainwashing, but seizes an opening and escapes. The moment she risks her life to rescue her boyfriend, he reveals who he really is...