"One person travels across time and thousands of families survive; one line of benevolence lasts for a hundred generations."
With Su Ho as the spiritual totem and four generations of Li Hou, Tang Waner, Li Chengyue and Li Zhao as practitioners, it tells how a medical family adheres to the sole goal of "benevolent skills to help the world" in troubled times. Each generation faces the obstruction of specific villains and the impact of the torrent of the times, and their common mission is: to let the light of the "Rejuvenation Hall" illuminate the dark world.