Yan Fendan, the last descendant of the Dan Dao family, bears the blood feud of destroying his family and hides in a world where martial arts is respected. Shen Qingyue, a wandering warrior with a secret, will suffer heart-gnawing pain every full moon. When the two met, a conspiracy that lasted for thousands of years gradually emerged: the truth about the "withering and prosperity of spiritual energy" covered up by the three holy places, the path of dual cultivation of alchemy and martial arts that was deliberately cut off, and the prophecy that "the one who unites heaven and man will redefine the world." From identifying the yin and yang of vegetation to deducing the changes in heaven, from opening up meridians and acupuncture points to harmonizing dragons and tigers, they will use their lost wisdom to ignite the flame that subverts the world. The price may be their lives, or it may be the rebirth of an entire era.
