In 1937, Japanese imperialism launched a war of aggression against China, and the Chinese nation entered a critical period of life and death. The three-month-long Songhu Battle ended with the defeat of the national army. The Japanese invaders' iron hoofs crushed the dream of singing and dancing in the foreign land. Various forces competed fiercely, collided and tore in this prosperous metropolis, and the situation was turbulent. In the turbulence of the times, the fate of the little man Xu Tian (played by Zhang Luyi) involuntarily changed dramatically. Xu Tian was originally an ordinary accountant with color blindness, but he was accidentally involved in the fight between the underground party and the Japanese invaders. The noble character of the underground party members who sacrificed their lives for their ideals infected Xu Tian, so he used his astute mind to help patriots transport important materials. During this period, he met people with complicated backgrounds such as Tielin (played by Zhou Yiwei) and Jin Ye (played by Li Tianzhu), and met Tian Dan (played by Tao Hong), a beautiful woman who seemed like a fairy. Xu Tian not only witnessed the legend of Shanghai in the dark and chaotic times, but also participated in the important moment of historical change...