Female spy Yui Aikawa successfully steals a disk containing all the data from the Female Body Torture Research Institute. However, sensing danger closing in, she entrusts the disk to another party in a desperate attempt to protect herself. Despite her efforts, she is ultimately captured. What awaits her is extreme pleasure torture designed to break her will and force a confession. Her body and mind gradually shatter under relentless waves of climax and convulsions, consumed by unbearable ecstasy. Will she fall completely? Her fate hangs in the balance.