College student Zhang Xuanxin accidentally awakened the [God-level Celestial Master System] during a ghost collision incident, and has since embarked on the road of catching ghosts and exorcising evil spirits in a modern city where aura has revived. The system provides merit points by issuing tasks and killing monsters. Zhang Xuanxin can use the merit points to exchange for various heavenly master skills and powerful magic weapons, and continuously upgrade them. Using the identity of an ordinary student as a cover, he "pretended to be a pig and eat the tiger" on campus and in society, and solved a series of bizarre supernatural incidents.
In the process of upgrading to fight monsters, he got acquainted with a glamorous school beauty from an ancient exorcism family, a vitality girl who is proficient in ancient martial arts, an enchanting policewoman who handles supernatural cases, and a stunning demon king who is both good and evil. As the incidents he solved became more and more difficult, he gradually uncovered the shocking secret behind this world-wide resurgence of spiritual energy, and eventually grew into the strongest guardian in the city, launching an attack on the legendary position of Heavenly Master.
