Lin Ling’er’s fantastical transmigration journey spans two worlds, ancient and modern. In the modern world, Lin Ling’er is a researcher of ancient texts who studies both classical literature and astrophysics. After an accident, she transmigrates to the ancient Dasheng dynasty, where she becomes a female Daoist priest named Xuanling at the Celestial Secrets Pavilion, a mysterious place steeped in occult lore and intrigue. Using her modern scientific knowledge and intelligence, Lin Ling’er gradually uncovers the secrets hidden behind the pavilion, including the true nature of occult concepts such as divination scores and yang energy. She discovers that the pavilion’s astrological forecasts and divination scores are not the will of heaven at all, but tools manipulated by human hands. Faced with power struggles within the pavilion and the schemes and persecution of senior priestesses such as the abbess, Miaoyuan, and Yuzhen, Lin Ling’er draws on her wit and modern knowledge to overcome one crisis after another and steadily improve her standing within the pavilion.