Renka Yuzuki, a capable secretary at a major company, has supported the president without pandering to anyone due to her pride. However, a sudden corporate takeover takes control of the company, and the new president, Kuroda, takes office.

Yuzuki firmly refuses Kuroda, who arrogantly says, "From today, you are my secretary." She pushes him away, saying, "I have no intention of recognizing you as the president," but Kuroda sneers and says, "I am the rule," forcing her into her "new" role.

A humiliating deep throat and anal sex unfolds behind closed doors in the office.
The arrogant secretary is thoroughly cornered and dominated.
She tries to resist many times, but her attitude gradually crumbles due to relentless training.

And then――

The cold-hearted secretary is eventually transformed into an "obedient female slave"...