Lu Zhou of the vampire clan has a peculiar constitution, fearing neither sunlight nor mithril. Living under an assumed name, he works at a convenience store while being closely watched by demon hunter Fang Yueyao. After his identity is exposed, he is forced to flee and gets caught up in the struggle over the Blood Moon Secret Scroll. He falls into an otherworldly trap in Orchid Village and maneuvers among supernatural forces, each harboring its own ulterior motives. After several clashes, Fang Yueyao discovers Lu Zhou's true identity and reports him publicly, only to be deemed mentally influenced by the otherworld and imprisoned in an isolation room. Lu Zhou seizes the opportunity to disguise himself as a human and join the Demon Hunter Association, taking charge of the increasingly chaotic Fushou District and recruiting Nangong Xun to gather intelligence while secretly fighting against the Blood Slaughter Organization. The power struggle among the various factions continues unabated, the threat of the sleeping viscount remains, and long-sealed truths await revelation.