On December 6, 1937, the Japanese army broke through Nanjing City and carried out brutal massacres in Nanjing City. The sky turned into a hell on earth, and the bloody haze enveloped the city of Nanjing. A group of women singing along the Qinhuai River and a dozen female students hid in a church in the city center in order to escape. Father Ingmar told them that as long as they hid in the church, they would be safe for the time being. Gradually, many people fled to the church due to various reasons. During the 49 days when Nanjing was occupied by the Japanese army, the female students in the choir, the singers on the banks of the Qinhuai River, and the wounded soldiers who had no time to retreat gathered in this church for the same reason. A group of people were tightly bound together by the ropes of fate, and wrote a tearful national elegy in the flames of war and gunpowder. Countless people were moved by the blood and tears of the little people