A plain, overweight secretary has a one-night encounter with a cold-faced CEO and flees in panic, unaware he has been desperately searching for her. After drastic weight loss due to pregnancy, she returns as a stunning beauty. While fending off her clingy ex, she receives silent protection from the CEO. Full of hilarious misunderstandings and ambiguous tension, their secret finally unravels—his long-sought dream girl has always been by his side.