In the small coastal town of Shinsu, Yun Bom immediately piques everyone's curiosity. People can only guess why a successful teacher from Seoul, ended up here. But all attention quickly shifts to Sun Jae Gyu, the town's most notorious figure. His arrival turns Bom's quiet life upside down.

There's something familiar about Jae Gyu's actions, though Bom can't quite figure out why. Meanwhile, Se Jin disappears, frustrated from always coming in second because of Han Gyul. Bom and Jae Gyu head to Seoul to find her. At a critical moment, Jae Gyu's sudden appearance flips a switch in Bom's memory.