The love and murder between the girl who cultivates immortality and the gentle and gentle boy is revealed. Bai Qianxi, a young girl who was a loser in the world of immortality, was punished for sneaking down the mountain to copy scriptures. When she woke up, her soul passed through the Zhaoguo Shangshu Mansion and she became the daughter of a general who was killed by an adulterer on the battlefield. The original owner's left chest was seriously injured and all memory was lost. As soon as Bai Qianxi adapted to her identity, she discovered that her father had concealed the truth about the battlefield. The maid Caihuan was acting suspiciously. Even the Taoist priest on the street asserted that she was "not from this world" and that she could only return home by killing her "beloved".
Gu Yan, a down-and-out scholar, unexpectedly breaks into her life. This gentle man with a green sachet tied around his waist may seem powerless, but he can always give her guidance in times of crisis. Bai Qianxi gradually realized that he was not only the informant of Baixiaofang, but also the counselor around the prince. He could even disguise himself as the mysterious singer "Qing Niang" of Yanyu Tower. The two supported each other while investigating the cause of the original owner's death and getting involved in court intrigues, but Gu Yan's eyes hid deep affection and calculation that she couldn't understand.
"Kill me before you can go back." Gu Yan's venomous smile stung her eyes. Bai Qianxi's hand holding the sword trembled, and she finally understood the truth of what the Taoist said: "A true love is not a good person." It turned out that it was Gu Yan who set up a trap to protect her from the beginning of time travel, and he had already tied his hope of returning home to the sword she stabbed with his own hands.
Returning to the seemingly familiar world of cultivating immortals, Bai Qianxi held the sachet left by Gu Yan, but found that the Star Sect and the junior disciples here seemed real and illusory. When she saw the looming curse mark on her forehead in the mirror, she was shocked to realize that the three tribulations might have just begun...