In the 19th year of the Republic of China, in an abandoned room, a letter lay quietly. The contents of the letter record from beginning to end a story about their meeting and ending, about how they secretly used guns to contain each other and questioned each other but secretly developed love.
Gu Qing's life was not a rough one. He studied diligently from elementary school to high school, and found his goal in the first year of the military academy - to be loyal to the Intelligence Bureau and follow Qin Chen's footsteps. This seed was planted by Qin Chen without knowing it. However, when Qin Chen discovered it and wanted to change the flower that the tree finally bloomed, he did not expect that the seed planted accidentally could develop so fast. However, there will eventually be a chemical reaction between the cute Gu Qing and the careless Qin Chen. Whether it is an explosion or a fusion is unknown.
The cute and stubborn Intelligence Bureau Gu Qing vs. The cunning and cunning spy Qin Chen
Who wins and who loses in the end? Will there be an inside story about the ending of the story? Is Qin Chen's letter true or false?
The final answer can only be revealed by Gu Qing.
Concept: Secret love during the Republic of China