Yun Yang, an immortal cultivator who has lived for ten thousand years, once stood at the peak of the Tribulation Crossing Realm, but fell to the Qi Refining Realm due to a heaven and earth catastrophe and the exhaustion of spiritual energy. To find the opportunity for cultivation and ascension, he disguised himself as a delivery guy and entered the mortal urban world. A search by the Huo family connected him and Huo Siyun, the number one beauty of Jiangcheng, due to a century-old last wish. Facing the contempt of wealthy families, underground forces, and powerful martial arts rivals, Yun Yang swept away the crisis with peerless medical skills and immortal cultivation methods, and pursued the truth behind his inability to ascend.