Su Qingli: Her heart is on the wrong side, and her blood can heal people. Reborn as an immortal herb, she's forced to pose as a dead person, a fallen deputy captain, and return to the police force to get things done!
Investigating a drug lord nearly drives her mad: bizarre thefts, poisonings in locked rooms, and a string of deadly curses involving people with the same name, all tied to an orphanage fire twenty years ago! Even worse, everyone around her is playing a part: the coroner suspects she's a monster, the captain is digging into her secret identity, the person she trusts most is an undercover agent, the older generation sees her as a crop to harvest for a longer life, and even her younger sister's death was part of the scheme! The truth hits hard: she's not a substitute or a test subject, but an abyss where good and evil are all stirred together! In the end, she tears out her own heart to seal a rift in time and space and disappears, leaving behind only her steel-hearted captain. Every night of heavy rain, he stares at the scar over his heart and murmurs to himself: “Su Qingli! You're the abyss, and the light I fell for in this life!”