Set in the middle and late Tang Dynasty. Chu Chu a young girl from coroner family in southwest mountainous area comes alone to the capital to chase her dream of becoming a professional coroner. Prince An (Xiao Jingyu) a competent detective accepts her as a coroner partner for mysterious cases investigation. Chu Chu Prince and their friends break the balance of multiple forces in the capital figure out the truth of a blockbuster case which continued for 18 years step by step. Chu Chu and Prince get married at last.