Su Nianwan passed away in childbirth, and while her soul was wandering, she witnessed her husband Shen Yanci, who loved her deeply, remarry her best friend Lin Zhiyu. Only then did she realize that her and her daughter's deaths were not an accident, but Lin Zhiyu's careful planning. Shen Yanci seems to be indulging in sadness, but in fact he has already noticed the truth, but he sees clues in the details, pursues the truth in his own way, and finally exposes all the lies and harm to the sun.