The person who requested the Hakodate trip was Yeong-hoon, a cardiac surgeon and junior of Sang-sik. Unable to attend due to an important surgery, he asked Yeo-reum to travel on his behalf, along with a detailed itinerary. Meanwhile, as Haruko's appearances reappear throughout the videos Yeo-reum sent, Yeon-seok begins to suspect that their travel schedules are the same, and Yeo-reum grows increasingly confused. What hidden connection exists between Yeong-hoon and Haruko?
