Lin Siying, who came out of Lingyuan, only wanted to see the outside scenery, but she encountered the tragic scene of the demon clan massacring the village outside the Wufeng Mountain barrier.
She went from being a spiritual monk who was timid about killing, to a guardian who could draw spiritual fire to kill evil monsters; she met the Tiger King Biao Er by chance, and used him as a mount, but unexpectedly led to Master Black Scale's conspiracy; the words "Ling Yuan monk" from Red Flame Wolf Lord made her even more shocked to realize that the secrets of Lin Yuan had been spied on by the demon clan.
While tracing the traces of "Master Blackscale" behind the scenes, he also has to protect Lingyuan from being implicated in the disaster.
But she didn't expect that this journey of slaying demons that started by accident would lead her to reveal step by step the truth about the thousand-year entanglement between Lingyuan and the demon clan, and would transform her from a "viewer of the scenery" to a "Si Ying Immortal" in the eyes of the outside world.