When Gil Ra-im and Kim Joo-won meet, he finds himself stunned by her coolness, and he doesn't understand why she stays constantly on his mind. He pursues her, and although she blocks his advances at first, she gradually comes around and they begin learning about each other's worlds. Meanwhile, Oska reunites with his first love, Yoon Seul, who wants nothing to do with him, but instead wants Joo-won. To make matters more complicated, Ra-im and Joo-won magically start switching bodies.