17. Yeon-seo & Seong-woo's Old Memories

Yeon Seo has a dream about her childhood friend named Seong Woo, and she goes to the island where she met him for the first time. She asks the villagers if they remember the boy, and she gets to know that the boy died a long time ago. Meanwhile, Yeon Seo and Dan get to meet each other on the island.