Luo Shu, a woman skilled in understanding human nature, teams up with magistrate Han Muzhi to solve a series of complex and mysterious cases. Along the way, she forms a bond with Qi Menglin, and together, they uncover hidden secrets and injustices, while a larger conspiracy looms in the background.

Wen Yifan, by chance, ends up living with her high school classmate Sang Yan, whom she once rejected. They keep their distance until Wen Yifan learns from Sang Yan that she sleepwalks, intertwining their lives once more.