Kim Mingyu met Jang Dahee one day by accident. While training to become a pilot, she had been finishing up her forth year of college. Mingyu, usually a cold hearted, self centered jerk, looks at the world in a different way for the first time when they meet. However, when Kim Mingyu begins to fall for her new way of looking at things, she gets into an accident. Believing he has succeeded making her fall in love with him, he is shaken up as she forgets everything about him. Fuelling the fire, Jang Dahee's childhood friend, Hong Joshua, returns from the United States after he is given a teaching job in Seoul. Hong Joshua has had feelings for Jang Dahee since he knew what feelings were, but struggled to have her see him as more than a friend. But when she only remembers him, everything changes and Mingyu must come up with a plan to win Dahee's heart all over again.