The arrival of Bum-Moo's stepsister gives Yun-Ook the chance to learn more about her young roommate-the tragedy that drew him closer to his sister, the reason he dropped out of school, and the jealously that forced him out on his own. As she finds out more about Bum-Moo's story, a face from her own past takes Yun-Ook by surprise. Forced to confront her losses in love and life, Yun-Ook must decide once and for all how to move forward in response to Bum-Moo's affections.