A blood-red sky descends upon the Nine Heavens, announcing the first future world-destroyer: Ye Jiangyi, the Taiyin Saintess of the Heavenly Demon Sect. Anyone who kills her will receive an immense share of heavenly fortune and the blessings of the Heavenly Dao. Overnight, the righteous and demonic factions wage a bloody war over her. Gravely wounded, Ye Jiangyi flees and collapses outside the dilapidated courtyard of Gu An, a menial servant guarding Qingyun Mountain. Gu An believes he will never advance beyond the Qi Refining realm, until he awakens the Invincible Courtyard System. The courtyard can isolate its occupants from the Heavenly Dao and suppress even the mightiest immortals, while the cultivation of its tenants is returned to the courtyard's master. And so, the demoness washes dishes, the sword immortal puts away her sword, the female emperor keeps the accounts, and the demon lord feeds the chickens. While people across the world go mad killing one another for heavenly fortune, Gu An gazes at his increasingly crowded courtyard and ponders: where will the next wanted immortal maiden sleep?