In the deep residence of the Wu family, a mournful cry is heard. The old master of the Wu family is at the brink of death. The heartbroken Wu mother suddenly pleads with her only son, Wu Jiaqi, who is dutiful to his father, to carry out his father's last wishes: to put an end to the deadly 'Moth Throat Syndrome,' which has cost the lives of generations of Wu family's only sons. It must be resolved before the father's last breath because, according to the Taoist, the Wu family's past grievances have transformed into a fierce black moth, hunting down the only son of the Wu family to take his life. Once afflicted with this deadly syndrome, it is like cancer today—an incurable disease. Not only is the patient doomed to die, but it also passes down through generations without leaving anyone alive. Therefore, to break this curse that brings destruction to the Wu family, it is essential to seal the fierce black moth within the father before he passes away, preventing it from escaping and surviving. This way, it will also no longer seek opportunities to enter the only survivor of the Wu family, Wu Jiaqi. This is the only path to salvation for the Wu family. Wu Jiaqi, who had studied in the county and excelled in academics and character, resolutely disbelieves such a bizarre legend. Despite his desperate resistance, Wu's father ultimately passes away peacefully. As everyone laments that Wu Jiaqi can no longer escape the fatal calamity of the Moth Throat Syndrome, the only one who consistently supports him against all opinions is Liu Rumei. This treasured daughter of the Liu family, who is betrothed to Wu Jiaqi, is not only outstanding in appearance but also...