Proud investigator Yuri infiltrates the Black Dog crime syndicate alone and wins a gunfight, only to be captured by an executive when she lowers her guard. A spy inside headquarters had turned the entire mission into a trap. Rope bondage, relentless mental and physical torment, and a special aphrodisiac steadily erode her mind and body. Even pain and suffering become distorted as her resistance gradually collapses, leaving it unclear whether this is the end of her mission or the start of her surrender to pleasure.