A school teacher Do-kyeong (Jun Seok-ho) dies as he fails to save his student Ji-yong from drowning. After the two pass away, Do-kyeong's wife Myeong-ji (Park Ha-sun) and Ji-yong's sister Ji-eun are left alone in the world, having to cope with the loss of their loved ones. Myeong-ji travels to Warsaw, Poland, to stay distanced from her harsh reality and meets an old friend to whom she hides her husband's death as if she is trying to reject the tragedy. While she is unable to let him go, Ji-eun is hospitalized as her health condi- tion worsens. Lacking any enthusiasm for life, Ji-eun also struggles to recover. On the day of the Warsaw Uprising, where people commemorate the death of victims of their dark history, Myeong-ji returns to her home in Korea, where a letter from Ji-eun is awaiting