Hong Seokpyo (cast. Lee Sungyeol)
He grew up without knowing mother's love because his parents were always busy with work. He is cranky and sensitive and is very mistrustful of those who approach him. Thanks to his mother who is the founder of Genius Cosmetics, he is a major shareholder and CEO and contributes to company's growth. However, symptoms of panic disorder cast dark shadows on his future. To top that off, he is falsely accused for malpractice and embezzlement and ends up being put on probation for two years. To fulfill his pledge to the judge, he becomes the 'undercover boss' and works at the Genius Beauty Center to experience what it's like to be at the bottom of the social ladder. There, he meets the woman of his fate, Eunjo.