Cheng Si is timid and introverted and has never had friends. When she entered high school, she met Zhao Wanwan.Zhao Wanwan pulled Cheng Si and talked a lot. Cheng Si was surprised to find that Zhao Wanwan seemed to be another self in the mirror.

Later, Cheng Si accidentally bumped into Lin Shanshan in the corridor, so he began to be bullied by her and Li Jian, Chen Chaoyang and others. After Zhao Wanwan noticed it, she confronted Lin Shanshan and others to protect her... Lin Shanshan asked Cheng Si to stand on their side, facing the temptation of not being bullied again, and was also afraid that Lin Shanshan would expose indecent videos.Cheng Si’s final decision was…