In Shanghai in 1937, there was an undercurrent surging beneath the ten-mile foreign arena where singing and dancing were flourishing. The Japanese army pressed forward step by step, and the clouds of war shrouded the sky.
Military agent Shen Ye was ordered to sneak into Shanghai, and as a Hong Kong businessman, he dealt with the Japanese puppets and various forces, carrying out a top-secret mission codenamed "Night Owl". At a cocktail party, he met Su Yelan, a Shanghai socialite. She was gorgeous but her background was a mystery. Shen Ye was keenly aware that she was not just a rich girl, and the special scars on her hands hinted at unusual experiences.
The initial encounter was full of temptation and suspicion. The two were like chess players playing in a fog, not knowing whether the other was a friend or an enemy. However, in a series of dangerous confrontations and unexpected cooperation, they gradually saw through each other's disguise and revealed each other's true identities - anti-Japanese comrades belonging to different camps.
At the critical moment of national survival, the barriers between the Kuomintang and the Communist Party were crossed by the common goal. Shen Ye and Su Yelan resolutely chose to join hands and became the "star" combination lurking in the heart of the enemy. They covered each other, shared intelligence, and destroyed the Japanese army's conspiracy many times. From obtaining evidence of the poison gas factory to guarding the refugee evacuation channels, they walked on the edge of the knife and made great achievements in silence.
In the baptism of blood and fire, two lonely and tough souls are attracted to each other, and a forbidden but sincere love quietly grows in troubled times. They made the "West Lake Promise" and looked forward to the peaceful time after the victory of the war.
However, the torrent of the dark ages never favors personal happiness. In the last mission involving the lives and deaths of tens of thousands of people, in order to prevent the Japanese army from blowing up the key channel for refugees to evacuate south - Qingyang
