Su Xuan, the Great Emperor who once shook the three realms, successfully achieved success and retired, choosing to lay down his authority and retire to farm. Accompanied by his Dao companion Shuang Chen, he sought a free and easy world, farming and resting during his leisure time, and casually mentoring his quirky disciples Lin Xiaoman and Su Wanqing, along with a spirit cat and a earth dog. Wanting to live in peace and stability, he instead stumbled into the mists of heavenly secrets and encountered ancient relics and secret matters. Days unfold amidst casual travels and investigating strange conditions; the retired emperor looks leisurely, but once something happens, his prestige remains undiminished.