During the Daqian Dynasty, Yechen, the illegitimate son of the Zhenbei Hou Mansion, was framed by his aunt and brother, and was slandered as an evil spirit, and was buried alive in a mass grave on the outskirts of Beijing. On the verge of death, the blood in his body accidentally awakened the remnant soul of the ancient blood ancestor buried underground, and was forcibly transformed into an immortal blood descendant. From then on, during the day, he was a useless person who could be bullied by everyone. At night, he transformed into a hunter, feeding on the blood of his enemies and gradually controlling the power of darkness. He kills decisively and works step by step. Not only does he want to avenge the Hou Mansion, but he also wants to establish his own Eternal Night Dynasty in this strange world where humans, demons, ghosts, and mystics coexist, uncover the ultimate secret of the origin of the blood descendants and the ancient war, and become the only king in the night.
