Lu Qingyao, a disciple of Yaochi, was accused of concealing the cause and effect because he owed a life to a mortal Orion three hundred years ago, and was demoted to the earth. After descending to earth, he discovered that Lu Zhan, a descendant of Orion, had exactly the same appearance as his benefactor, and he never lived past the age of twenty-five in each life. In the process of investigating the truth, she gradually uncovered a conspiracy that spanned three hundred years - Xuanqing Palace Lingxuzi, in order to refine the "Love Tribulation" in order to break through the limits of immortality, trapped the soul of Orion in reincarnation, and used Lu Qingyao's karma debt as a sacrifice. In the end, Lu Qingyao uncovered the conspiracy, used her own cultivation to cut off the chain of cause and effect, rescued Lu Zhan, and learned from the Golden Mother the true origin of herself and Lingxuzi.