Han Ji Hyuk's memory flashes before him. He remembers that it was Choon Gil who came to the safe house in Dandong to see him. Without the agency's support, he tracks him down to find out everything that happened on that day one year ago. 

New truths unfold as Ji Hyuk investigates Seo Su Yeon. While he digs into Su Yeon, he gets faced with a new enemy when his partner Je Yi gets kidnapped.