Su Mu Li, the dual-personality lord of Fengcheng City, is feared for her unpredictable nature. While the world sees her as both gentle and ruthless, her true struggles remain hidden. Assassin Duan Yun Yi, tasked with eliminating her, infiltrates her palace by posing as Han Zi Ling and marrying her. His plan is simple: get close and strike. However, he uncovers an unexpected truth—Su Mu Li's kind-hearted side seeks the same goal as him: to destroy her vicious alter ego. Together, they confront the darkness threatening to consume her entirely. (Source: MyDramaList)