Xiao Nan went down the mountain entrusted by his master to fulfill a marriage engagement with the Xie family, but unexpectedly suffered public rejection and humiliation at the engagement banquet. In his moment of despondency, he fortuitously met the endangered eldest Miss Lin and rescued her, subsequently marrying into the Lin family as a matrilocal son-in-law. The eldest Miss Lin is gentle in nature and treats Xiao Nan with utter sincerity. Possessing top-tier medical skills and profound Daoist techniques, Xiao Nan concurrently engages in deep meditation and conditioning to suppress the uneradicated fire poison within his body, while successively fighting against various provocateurs approaching him, repeatedly resolving crises and revealing astonishing strength.