The drama tells the story of Gil Ra Im (Ha Ji-won), a poor and humble stunt woman whose beauty and body are the object of envy among top actresses, and Kim Joo Won (Hyun Bin), an arrogant and eccentric CEO who maintains the image of seeming perfection. Their accidental meeting, when Joo Won mistakes Ra Im for actress Park Chae Rin, marks the beginning of a tense, bickering relationship, through which Joo Won tries to hide a growing attraction to Ra Im that both confuses and disturbs him. To complicate matters further, a strange sequence of events results in them swapping bodies.