A spoiled and arrogant business woman, named Lee Sung Kyung, tries to change her ways after being engage with Park Seo Joon, for the growing of their businesses.  But when an employee who’s nice, pretty, and considerate, name Bae Suzy, comes into play, will Lee Sung Kyung become her old self again or will she endure everything that will come her way, for the love of Park Seo Joon?  For some reason, everytime Sung Kyung runs into a problem with her and Seo Joon’s relationship, Kim Ji Soo, who is a CEO of the Diamond Co. which is sponsored by Sung Kyung’s company, is always there to “protect” her, but what does he really want?

Sung Kyung and Seo Joon has been together since high school, they went to a private high school, where only rich kids go too.  They weren’t considered friends because of the lack of communications, but they were classmates throughout high school and learned a lot from each other, from afar.  The two have always had something going on between them, whether they believed it or not.  Although Sung Kyung was selfish, she has done nothing to harm anyone around her.  If she saw trash on the ground, she’d cuss then pick up the trash to throw it away.  Seo Joon who is known for his looks and his intelligence, was always observing Sung Kyung and looking after her, even if he had a stern and cold expression towards people, it was always different when it came to Sung Kyung.