Private first class Shin Dong-uk is appointed as a teacher at a civilian education center run by the military. He meets there his ex-girlfriend for the first time in eight years. She has been widowed, with a child named Jin-yeong. He wants to get close to her once again, but she doesn't give him a chance. Jin-yeong loves him like his own father. One day Dong-uk receives transfer orders to Vietnam. Only then does she tell him that Jin-yeong is his son.
Private first class Shin Dong-uk is appointed as a teacher at a civilian education center run by the military. He meets there his ex-girlfriend for the first time in eight years. She has been widowed, with a child named Jin-yeong. He wants to get close to her once again, but she doesn't give him a chance. Jin-yeong loves him like his own father. One day Dong-uk receives transfer orders to Vietnam. Only then does she tell him that Jin-yeong is his son.