Inheriting a fortune means nothing to Kim Gwiboon. She'd rather follow her dream to be a fashion designer in Paris. Not only did she inherit the money, she also inherited her grandmother's long-time personal assistant whose an overprotective nerd. Little does she know but that nerdy personal assitant, Choi Minho, is a bodyguard, very well built, and have looks that makes him the perfect man to protect Gwiboon. As the wall between the two start to crumble, keeping his masquerade and the true mission isn't as easy as he thinks it is.