Yan Dan and her twin sister, Zhi Xi, are the sole descendants of the ancient tribe the Four-Leaved Lotus. Yan Dan’s entire being is a treasure trove of medicines. She and twin sister Zhi Xi transformed into human form a century before while attending the Queen Mother's Feast, but Yan Dan faced the greatest trial of her life - the love trial. Falling in love with Lord Ying Yuan resulted in her wasting the following 900 years trying to forget him. Such a high price to pay!

Now the supportive Yu Mo enters her life, encouraging her daily to perform good deeds. While punishing evil, they encounter Lord Ying Yuan's current reincarnation, Tang Zhou, the demon hunter. They assist Tang Zhou in his quest to locate the four ancient artifacts, uncovering an even more mysterious secret. Can the trio find the evidence they need despite the dangers?

Yan Dan regains her memories and discovers that Ying Yuan is the one who wiped out her memories and turned her into a ''spirit'' and sent her to the Mortal Realm. Lord Ying Yuan, who took a Human form as Tang Zhou to search for the mystery about the ''God-Demon War'', only needs one more divine artifact to repair his celestial vessel so that he can return to the Heavenly realm as the Sovereign Lord.

Will he succeed in his mission and reveal the ''Anonymous figure'' who backed all the evil doings? Will Ying Yuan and Yan Dan be able to get back together despite all the misunderstandings and barriers between them?