The story is simple and a little bit cliché:

Tiffany is an aspiring Designer who worked hard to get her job at Blanc Group and there we have Jessica as a CEO who's humble, passionate, young, and good looking. Who would have thought that she owns the company?

On the other hand, we have Taecyeon. Jessica's close friend who's goofy and funny whose job is to be Jessica's butler. He's the son of Jung's families chief butler and unfortunately his dad's job passed on him too due to their undying debt but despite that. Jessica never treat her different from others.

Tiffany do have a best friend too! And it's Yoona who owns a small coffee shop that's earn a bare minimum amount for living. The girl dream that someday she'll met a Prince Charming who owns a large sum of money!

One day, while working at her shop. She met Taecyeon to whom she mistaken as the new appointed chairman of Blanc Group. The said guy who is apparently head over heels of Yoona decided to get along with it until he got no choice but to dragged Jessica along with his plan of role-playing as the CEO with a condition that he's going to tell Yoona the truth. Too bad, Tiffany did something horrible at her work and Yoona advised her to meet Taecyeon in person to asked for a second chance but then she met Jessica to whom she thought as the maid of Taecyeon's.