Mo Jingshen, a descendant of the Mo family, accidentally discovers a bronze key from the Five Ancestors Temple, uncovering a secret pact between his father and the Honglian Cult. The key points to a hidden compartment aboard the Guiyan, where the Lotus Scroll records the two factions' declaration of war against the Black Ship forces. The Northern and Southern Hongmen have split apart, and the Southern Hongmen leader has colluded with foreign enemies. Together with the Four Guardians, Mo Jingshen uses the Seven-Petal Lotus Banner to unite their forces. From San Francisco's Chinatown to Guangzhou's Red Flower Pavilion, they unravel the Zhulong Gu poison and uphold the belief that “the returning geese must come home,” reshaping the order of the Hongmen in the midst of blood and fire.
