Su Yu unexpectedly transmigrates to the Cangyuan Realm, appearing outside Dongning Prefecture just as the demon race attacks a village. At the brink of death, Yun Wanhai of Dongning Prefecture happens to pass by, rescues him, and takes him back to the Yun family, where he is adopted. From then on, Su Yu lives and trains alongside Yun Qingping, gradually adapting to this world of demons and cultivators. In the Yun family library, he encounters all kinds of cultivation manuals and becomes deeply interested in the cultivation systems of traditional Divine Venerables and Body-Refining Divine Venerables. Yun Wanhai recognizes Su Yu's talent and personally guides him in basic cultivation techniques. Su Yu demonstrates an aptitude far beyond that of ordinary people, making rapid progress.