Can you actually not show what your true colors are while working with a lot of people? Eun Hwan Ki, the director of the top public relations agency, is a mysterious man known as “The Silent Monster.” No one knows much about him because he always avoids eye contact and appears coldly aloof and arrogant, but in truth he’s an extreme introvert — a PR executive who hates attention and is too shy to be around people. Chae Ro Woon begins to work at Eun Hwan Ki’s company. She is very energetic, the extroverted type and receives recognition for her work, but her only interest is in CEO Eun Hwan Ki. She plans to reveal who Eun Hwan-Ki really is.

Song Geurim is a radio program writer who isn't exactly talented in writing. She's got the passion, initiative, and drive, but due to her lack of writing skills, she still remains an assistant writer. When she was young, the radio was the only thing in the world that she could share with her blind mother. She was consoled by the sounds of the radio and loved it more than anything, so she became a writer. When her radio program is on the verge of cancellation, she succeeds in casting a top actor Ji Suho, who can't do anything without a script.

A story of two completely different lawyers. Go Tae Rim is a lawyer with a 100 percent success rate who knows how to play with the law, and Seo Jae In is a rookie lawyer who believes in the law and justice.