A school teacher Do Kyung dies as he fails to save his student Ji Yong from drowning. After the two pass away, Do Kyung's wife Myung Ji and Ji Yong's sister Ji un are left alone in the world, having to cope with the loss of their loved ones. Myung 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 condition 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, Myung Ji returns to her home in Korea, where a letter from Ji Eun is awaiting.