Ai, a secret investigator with a strong sense of justice, is ordered to infiltrate a certain company to get evidence that women who have been drugged with the illegal aphrodisiac LDX are being trafficked. She passes the job interview with her big breasts and succeeds in infiltrating the company, but the water she drinks contains LDX, making her body unable to move freely. Taking advantage of this, men expose her big breasts from her bodysuit and rape her! Can the big-breasted undercover investigator with a strong sense of justice overcome the effects of the aphrodisiac? What will be her fate...?