On Qinglan Mountain, shrouded in mist, the Bagua Sect is ambushed by the Blood Fiend Cult. The sect leader is killed, and the sect's treasured manual, The Dragon-Commanding Scripture, becomes the key to everything. Lin Yuan, an outer disciple, is entrusted with a desperate mission. Taking his junior sister Su Qing with him, he flees for his life. Along the way, a mysterious old beggar appears bearing the Dragon-Commanding Token. Half of a broken map points to a hidden realm along the ancient Yellow River route, while the dragon-shaped birthmark behind Su Qing's ear, a symbol of her inheritance, reveals her deep connection to the imperial family.
In a subterranean river guarded by an iron-armored giant turtle, and in the ancient Dragon Abyss Hall above a sea of magma, the hidden realm is packed with deadly mechanisms. As the sect's secrets, buried for a hundred years, and its entanglements with the imperial family gradually come to light, Lin Yuan masters the highest level of the Dragon-Commanding Scripture in the face of desperation. But he discovers that the “dragon marrow” sought by the Blood Fiend Cult could spark a shocking conspiracy capable of overturning the entire martial world. With bonds between master and disciple, sect survival, and imperial secrets all intertwined, watch as the young hero uses his Bagua Dragon-Fist to break through the deadlock, uncover a century-old truth amid bloodshed, safeguard the inheritance, and reshape the order of the martial world.
