As job-seeking dreamer, Yong-jun works part-time at his parents' lunch box house. One day, Yong-jun meets Yeo-reum while delivering lunch boxes and falls in love at first sight. Yeo-reum supports her hearing-impaired swimmer sister, Ga-eul. By using sign and body language, Yeo-reum and Yong-jun seem to get close to each other. As soon as Yong-jun finally thought he was getting close to each other, Yeo-reum tries to get apart from Yong-jun...