"You're such a filthy girl... Let me train you thoroughly. Don't hold back—come as much as you want. After all, you're my most important secretary!" Big-titted secretary Sayaka Ikeuchi, obedient to the company president yet freely wielding power over her coworkers, is summoned to the president's office. There, she serves him with creampie-filled sex, while simultaneously plotting to seize control of the company using her feminine wiles. The story unfolds as she advances her scheme to dominate the corporation, deepening her twisted relationship with the president through humiliation, rape, and intense sexual training.