In the twentieth year of the Republic of China (1931), remnants of the evil Blood Mother Cult plot to activate the Seven-Star Blood Sacrifice to resurrect an evil entity and plunge the world into chaos. Zhao Yang, heir to a family of spirit-sealing masters, joins forces with Wu Qing, a foreign-trained psychologist, to investigate a series of mysterious cases. Together, they gather companions with extraordinary physical abilities and overcome countless dangers to expose the cult's conspiracy and lies about their identities. They ultimately destroy the blood-sacrifice formation and eradicate the forces of evil. Standing firm in their pursuit of justice, the two protect ordinary people and use righteous methods to banish evil spirits, spreading the values of punishing evil, promoting good, and safeguarding the world.