From the dark night to the bright morning, the marine police search for Doo-hak. Jung-shin is devastated after hearing from Cheol-woong that it seems Doo-hak has drifted out to sea. Three years later, Cheol-woong works with Choong-sung after returning from an assignment in the area. Meanwhile, Jung-shin hears shocking things about Cheol-woong from Doo-hak's mother.
