"She with a Secret" uses the bizarre death of a girl as a clue, and puts the plot into a vortex of doubt. While investigating the cause of her sister's death, the girl Yuan Qiangwei (played by Ding Ran) locks on the cold and wealthy businessman An Xuehu (played by Ding Zeren) through a mysterious email; she finally succeeds in getting close to the target person through layers of resistance, but finds that the truth is far more complicated than she imagined. Although An Xuehu, the cold president, is extremely self-disciplined and self-sustaining, he always loses his composure when facing Yuan Qiangwei. It is difficult to tell whether he is guilty or emotional. "How many secrets does a person have to hide in order to live a clever life?" Murderer, lover, informer, ambitious person... Everyone hides their own secrets under the established labels.