The story takes place in the first year of the Taichu era, when the righteous Emperor Xuan battles the Demon God Jiaye at Lake Chiping. After a fierce fight, Emperor Xuan sacrifices greatly to seal Jiaye within the lake. To prevent the demon’s resurrection, he uses the mystical Linglong Immortal Palace to suppress Jiaye’s soul stone deep within a forbidden land. Ten thousand years later, the Linglong Immortal Palace has become Xianhu Primary School. A new student, Zhang Ziran, begins encountering a series of strange and mysterious events around the campus. As he uncovers hidden truths, he discovers the existence of the ancient Heavenly Secret Order buried within the school’s depths. Joined by his friends, Zhang Ziran bravely faces demonic forces in an epic struggle between good and evil. Through courage and cleverness, they triumph, restoring peace to Xianhu Primary School once again.