Frequent strange murders occur in Jiangbei City. Jiang Chen, a college student, encounters a female ghost knocking on the door late at night. He accidentally awakens the demon-transforming system, obtains the initial ghost energy and demon-transformation card, and then embarks on the road of "reducing ghost energy and becoming stronger". He plays with evil ghosts with his bizarre operations, from the female ghost in a white dress in the apartment corridor, to the corpse in the hospital morgue, to the headless ghost in the resort villa, and the evil ghost Bai Ling in Xiangyang Middle School. Every encounter is solved in a funny and hard-core way.
