The battle for wealth and power between the Xiliang Wolf Tribe and the lord of Yangcheng is underway. The tribal leader, Aogu, is caught in a conspiracy to form an alliance, and she and her husband, Jiu Ye, are both plunged into crisis. In the end, they are killed by their treacherous general, Ye Shang.
As her soul is about to fade away, Aogu's inner core attaches itself to a spiritual herb. The twin flowers that bloom upon it absorb the power of the spiritual pill and transform into two girls, Duling and Xunchuan.
They grow up together with a lone wolf, but on their thirteenth birthday, a long-planned fire suddenly breaks out. The spiritual herb is burned, on the verge of withering away, and its spiritual power is lost. A pair of silver bell bracelets that can reveal one's past life remain with Xunchuan, while Aogu's power to make plants grow again is bestowed upon Duling.
Their spiritual powers are hidden, and they forget their past lives, yet in this life they are once again about to plunge into darkness. The Great Liang is on the verge of collapse. Can they join forces with the male lead to change the present and save all living beings from danger?
They must break through the spell of the blood pact made a thousand years ago, bear the cause and effect of their fated cycle of reincarnation, and fulfill the heartfelt wish Aogu carved upon the Three Lives Stone. They will also awaken their spiritual powers and clash with the darkness.
Duling eventually becomes the leader of Xiliang City, while Xunchuan is honored as the queen of the palace. Together, the sisters accomplish their shared ambition of bringing about a peaceful and prosperous age.
In the end, Duling transforms into a vine once more to protect all living beings, while Xunchuan remains in the palace to protect her home, waiting for Duling to return in her next life.