Yoona narrowly escapes death thanks to a stranger, Soojung, who turns out to be a fellow student. From that day on, Yoona becomes known as the girl who cheats death; having been left unscathed in multiple dangerous situations, and every time Soojung always seemed to be close by. Was Soojung just a lucky charm or was there something she's hiding? Whatever it was, Soojung was determined to keep Yoona sa