Thanks to her foolish twin brother, Seowon Han has found herself in a pickle—she must pretend to be him for six whole months to save his job as the company VP’s secretary. However, Seowon’s boss immediately senses that something’s not right. To make matters worse, why is the vice president’s biggest rival trying to get to know her? All she wants is to go on a nice vacation… Can Seowon prove her innocence and keep her secret safe amidst all this office drama?