In his senior year of high school, Xie Yunfan was sent by a mysterious organization to Longyuan Middle School, the number one university in China. His mission was to lurk next to Lin Qingxue, the number one goddess on campus, and investigate the shocking secret behind her father's disappearance. However, on his first day undercover, he accidentally bumped into Lin Qingxue crying alone on the rooftop late at night. What shocked him even more was that the aloof school beauty mistook him for her long-lost childhood sweetheart "Achen".
In order to complete the task, Xie Yunfan resorted to tricks and assumed this non-existent identity. Relying on his extraordinary IQ and keen insight, he helped Lin Qingxue resolve secret crises one after another. At the same time, he gradually discovered that under the seemingly peaceful campus of Longyuan Middle School, there was hidden a huge power network spanning the political and business circles.
The school belle's dependence on him is getting deeper and deeper, and the organization's tasks are becoming more and more dangerous. When Xie Yunfan struggled between love and mission, a well-planned conspiracy pushed him to the crossroads of destiny - the truth about Lin Qingxue's father's disappearance was closely related to the mystery of his own life experience.
The deeper the misunderstanding, the truer the confession. When the mask is torn off, who is the final winner?
