 At the same time, he spies on his team leader, Seo Pan-seok (Cha Seung-won), believing that he is related to the killer of his mother's case.As he unravels the truth behind the incident 11 years ago, he learns about his past, identity as well as making deep connections with people around him.While filming an action scene on June 9, 2014, Lee Seung-gi was poked in his left eye by a prop knife, causing corneal damage and an intraocular hemorrhage.