As the flames of the Anti-Japanese War swept across Shanghai, cartoonist Gu Qingzhi used the "Hot-Blooded Knife" as a blade to burn the blood of his family and country and awaken countless people with lofty ideals; Lin Xiuzhu used "Small Town Chronicles" as a source of warmth, using ink to hide the fireworks of troubled times and protect the glimmer of people's hearts. The two have conflicting painting styles and conflicting ideas, but through writing battles and experiencing dangers together, they understand the meaning of each other's persistence, and their love quietly grows on the paper.
They used paintings as shields to protect their compatriots, spread information, and stay with each other in the flames of war. After the victory of the Anti-Japanese War, Gu Qingzhi went to the peacekeeping battlefield with his pen, while Xiuzhu stayed in Shanghai to express his concerns with paintings. From the beacon smoke in Shanghai to the watch across the ocean, the two brushes have always been side by side, depicting persistence in troubled times, warmth in the years, and a life of "the pen has responsibility and the love has power".