S1, E5: Although Seo Jin realizes that there must be more people involved in the kidnapping of his daughter, he still needs more information to be certain. While talking to Jin Ho, Ae Ri finds out about how her father died. Seo Jin finally gets a phone call from Ae Ri. When he finds out that someone close to him tried to kill Ae Ri, he decides to persuade Jin Ho into helping him. However, Seo Jin doesn't have a clue who else is involved in the matter.