In a desperate search for his missing younger sister, investigative journalist Su Yang ventures into a remote village on the Thai border, a place paralyzed by the terrifying legend of "Krasue"—the Flying Head Curse. People vanish every few days; the locals blame bloodthirsty demons, and even the police refuse to investigate. However, Su Yang quickly senses a deeper malice: the bone-chilling fear is manufactured, and the "monsters" are merely men in disguise. As he digs deeper, Su Yang forms an unlikely alliance with Arjan, a reclusive mystic living in the dense jungle, and Old Chen, a retired detective who has spent twenty grueling years hunting for his own missing daughter. Together, the trio uncovers a monstrous, cross-border syndicate hidden beneath the folklore: the "Butterfly Brood." Victims are kidnapped, caged, and drained of their blood to synthesize astronomical anti-rejection serum, sold exclusively to the world’s most powerful billionaires and corrupt elites. The legendary Flying Head Curse? Nothing but a psychological terror induced by potent hallucinogens. The Mother-Child Talismans? Chemical tracking agents. The Blood Sparrows? Ultraviolet fluorescent markers. There is no sorcery, no witchcraft, and no ghosts—only a cold, calculated criminal machinery using modern chemistry and ancient superstition to stage a thirty-year horror show. From borderline black markets to treacherous deep-mountain mines, from twisted luxury estates to the bloody US-Mexico border, Su Yang chases a web that grows darker with every thread. He realizes he isn't fighting a lone killer, but a flawless, twenty-year-old sovereign system that regenerates every time a node is destroyed. And the code name for his missing sister? Asset 007. "The curse is a lie. The devil is human."
