Chae Do-young has admired Seo Ki-hyeon on TV ever since childhood. When they reunite in high school, Ki-hyeon turns out to hide a sharp, calculating nature behind his gentle smile. The person he truly loves is his childhood friend Kim Ga-on — and to win that love, Ki-hyeon uses Do-young as a pawn. Even as she is used and hurt again and again, Do-young cannot stop her feelings for Ki-hyeon.