The story tells about a police officer named Chen Qian who received a report of a missing woman. After contacting the colleagues and friends of the missing person Han Xiaoting, a school bullying case that happened ten years ago gradually surfaced. Ten years ago, in a high school, a story happened between Han Xiaoting, Liu Tao, Zhang Beilei and others. Friendship and love, betrayal and indifference, insult and damage... left a deep shadow in Han Xiaoting's heart. Ten years later, the protagonists in the story are brought together by fate again because of their working relationship. Han Xiaoting launched a revenge plan...