The story begins with Cheng Yifan accidentally entering the Intelligence Bureau, and enters the world of espionage from the perspective of a spicy newcomer. Simple and lively exchanges are accompanied by witty and humorous dialogues. An Zhiwei and Meng Yuanzhou represent the two sides of good and evil respectively, but their identities are intertwined and gradually change. The three major volumes revolve around novice growth, identity crisis and the final outcome. Each volume's mission line is independent but foreshadows each other. The advancement of main events and the confrontation between multiple forces between volumes make the characters transform in the ups and downs of espionage warfare and personal emotions. The story combines tension, humor, adventure and humanity. The worldview involves a multi-layered espionage system and main characters with different personalities, creating a complex and vivid spy war stage.