Doil is about to get out of the army. Waiting for him are Soonyoung, a woman he’s promised to marry, and his newborn son. On furlough, Doil finds out that he is not the biological father, and shortly after, Soonyoung disappears. Doil does everything he can to find her, but is unable to discover her whereabouts. Nothing seems to be working out according to his plan of settling d...