The play mainly tells the frequent terrorist cases in Baihe Town, which flourished due to water transportation during the Republic of China: the Zodiac Heart-digging Case, the Human Flesh Bun Case, the Real Murderer Substitute for the Dead Ghost Case, the County Magistrate Murder Case, the Fiancé Murder Case, etc. Li Zhengjiu, known as "Uncle Nine", is good at investigating folk tricks, and his brother was mysteriously killed a year ago, and Uncle Nine suspects that all this is related to the terrorist case in Baihe Town