In 1980, Chen Yuan, a young Chinese man, inherited the ancestral "Tai Shang Cave Xuan Ling Bao Zhen Yi Sutra" and unexpectedly became the guardian of the Taoist tradition. Since then, Taoist sages from past dynasties such as Zhang Daoling, Lu Dongbin, and Sun Simiao have come every day to help him slay demons during the twenty years of turbulent changes. From the rise of township enterprises to the glory of the Asian Games, from flood fighting to century celebrations, they have always guarded the tranquility of this land. When the millennium bell rings, can Chen Yuan gather together a thousand-year-old orthodoxy to hold on to the dawn of hope for China in the final battle of the Demon Ancestor's resurrection? This is a guardian epic in which personal growth is intertwined with the fate of the family and the country.