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. "From today, you are my secretary," Kuroda arrogantly says, but Yuzuki firmly refuses. "I have no intention of recognizing you as the president," she says, but Kuroda sneers and says, "I am the rule," forcing her into a "new" role. A humiliating deep throat and anal sex unfolds behind closed doors in the office. The high-handed 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"...