, In 1940, Shanghai fell.
Shen Qingqiu, a new military agent, is full of passion for resisting Japan and saving the nation, and infiltrates the secret service of Wang Puppet Government, code-named "Nightingale".
She thought she was serving her country, but she didn't expect that on her first mission, she would run into the legendary "mad dog" - Gu Chenzhou, the captain of the Secret Service Action Team.
Gu Chenzhou is ruthless and murderous. He is the most loyal lackey in front of the Japanese.
Shen Qingqiu hated him deeply, but in the life and death games again and again, he discovered another side behind his cold-blooded mask.
She witnessed with her own eyes that the top leaders of the Kuomintang did not hesitate to sacrifice innocent people for their own gain; but Gu Chenzhou did not hesitate to expose part of his identity in order to protect a group of students.
"Why did you save them?"
"Because they are Chinese."
Gu Chenzhou's answer was like a knife, piercing Shen Qingqiu's faith.
Under Gu Chenzhou's guidance, Shen Qingqiu gradually saw the Communist Party's "On Protracted War", saw the true face of underground organizations, and saw real hope.
She began to waver, began to question, and began to re-examine her beliefs.
When the news came that the top leaders of the Kuomintang had betrayed and surrendered to the enemy, Shen Qingqiu was completely heartbroken.
She decided to turn to the Communist Party and fight alongside Gu Chenzhou.
From "Nightingale" to "Lone Wolf", they launched the final decisive battle inside the enemy camp, jointly smashed the Japanese army's "Plan to Clear the Countryside", and successfully sent out an important piece of information about the war situation on the eve of the victory of the Anti-Japanese War.
Before dawn, they finally ushered in their own light.
Conception:,