She is a Ghost Exorciser

Yin Ming, an arrogant demon from hell is banished to the mortal realm, condemned to protect the very humans she despised. Thrust into the body of Cai Zhilan, a woman who recently died, Yin Ming must navigate a complex web of human relationships and emotions.

Five years ago, Cai Zhilan tricked Long Hao Yu into marriage by getting pregnant, leading to a loveless union and a child caught in the middle. Desperate for attention, Cai Zhilan staged to end her life, only for her plan to go horribly wrong, resulting in her actual death.

Inhabiting Cai Zhilan's identity, Yin Ming is forced to confront the complexities of mortal existence. Torn between her demonic nature and growing human emotions, she begins to question everything she once believed in.