She is a princess abandoned by the God Realm, but she is the most beloved little princess in the Demon Realm. She had a complicated life experience and was abandoned since birth. When she was still a baby, she was picked up by a killer organization in the world and trained into a killing machine with a cold personality and no emotion. During a mission, he was lodged in the body of Lou Mingxi, who did not belong to the Nine Realms. Then she experienced all sorts of bizarre things that seemed to her. She is quiet and low-key during the day, but at night she is the cold-blooded and evil Lou Mingxi. Destined to have an extraordinary destiny, she is wandering in the nine realms. Which one will be her home? Who will be her warmest support?