Having practiced martial arts under Daoist Qingxu at Mount Zhongnan since childhood, Jiang Han descended into the mortal world carrying three letters of betrothal left by his master in order to uncover the truth behind his parents' death. Endowed with extraordinary skills and an upright character, he makes loyal friends and encounters various people and events in Weicheng. While fulfilling his engagement obligations, he tackles various trials and gradually approaches the truth of his lineage, embarking on a life journey full of encounters and growth in the bustling metropolis.