The drama tells the story of Kim Joo Won, an arrogant and eccentric CEO who maintains the image of seeming perfection, and Gil Ra Im, a poor and humble stuntwoman whose beauty and body are the object of envy amongst top actresses. 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.
Sakahira Riku, a first-year high school student, is jokingly pushed on the shoulder by his friend Tasaki while swimming by the pool, and falls into the pool with Mizumura Manami, who is next to him. The next day, when he wakes up, he finds that his body has been swapped with Manami's. Both are confused and try everything to get back to normal, but nothing works. They are forced to desperately exchange information about their families, friends, club activities, etc. in order to play the role of each other.
