300 years after the events of the Butterfly Lovers in a town called Liang Zhu Cho Yat-Chin after being saved by a mentor becomes a constable. On his first day to report for duty he solves a major case which leads Chief Constable Ching Ying-Hing to assign him to catch a murder suspect named Wan Tin-Bong. The case gets complex as more characters get involved.