In Shanghai in 1937, deep in the hazy alleys, Su Qingyuan discovered an old-fashioned radio with a brass casing in the old shop left by her father. When the knob was turned, in addition to the noisy radio waves, there was also a vague male voice hidden - it was a confession secretly mixed in by the patriotic officer Lu Jingchen when he was reporting the current situation on the radio a year ago.
At that time, she was a gentle watchmaker's daughter, and he was a high-spirited young general. The two became connected because of this radio. In Shanghai, where neon lights and war were intertwined, they listened to Zhou Xuan's "Song Girl from the End of the World" and made a promise to stay together. But the war suddenly broke out, and Lu Jingchen was ordered to rush to the front line, leaving only this radio behind, which became Su Qingyuan's only thought in the troubled times.
Many years later, Su Qingyuan traveled to Chongqing with a radio, and in the ruins after an air raid, she heard the familiar male voice again. Can this radio that spans the ages can once again bring back their deep feelings separated by the war?
