On a mysterious continent, humans, demons, and spirits coexist, but peace is disrupted by demons who run amok in the mortal world, committing countless evil deeds. The female protagonist Lin Wan'er saw her parents brutally killed by demons, and a blood-deep feud made her vow to kill all demons in the world. As a human cultivator, she resolutely embarks on the path of slaying demons. However, the demonic forces are intricate and complex, with mysterious forces pushing things from behind, making the war between humans and demons extremely difficult. Yet, with her firm will and high skills, Lin Wan'er never flinches, solely to kill the crowd of demons with her own hands, demand justice, and restore peace.