Can you truly conceal your true nature when collaborating with many individuals? Eun Hwan Ki, the head of a leading public relations firm, is an enigmatic figure often referred to as “The Silent Monster.” His elusive nature stems from his tendency to avoid eye contact and his seemingly cold and arrogant demeanor. However, beneath this exterior lies an intensely introverted individual—a PR executive who shuns the spotlight and feels uncomfortable in social settings. Enter Chae Ro Woon, a lively and outgoing new employee at Eun Hwan Ki’s company, who quickly gains recognition for her work. Yet, her primary focus is on uncovering the true character of CEO Eun Hwan Ki.