To endure in his transmigrated world, the once-righteous Gu Xizhou became a demonic cultivator—only to transmigrate back to his original existence. Returning in a rage, Gu Xizhou discovers the horrifying truth: his student had performed a forbidden demonic array intended to summon malevolent spirits, fundamentally corrupting his very essence. A former model citizen steeped in socialist values and law-abiding virtue, Gu Xizhou now inhabits the cursed existence of a heinous malicious spirit. The burning question consumes him: how could someone so fundamentally righteous become something so damnably sinister through another's dark magic?