Yi Jeong left Ga Eul for Sweden with a promise to return 4 years later and find her first. But what did that mean exactly? Ga Eul ponders their status and copes with her longing for Yi Jeong, while the two work to remain in touch. Will the Casanova be able to remain faithful to Ga Eul? Will their feelings for one another continue to grow, or will they be torn apart?