A resurrected Demon King leads a ruthless invasion of the human world, bringing chaos and desire. When the virtuous Holy Knight Ruvyrias attempts to stop his schemes, she is overpowered by the Demon King's dark magic and subjected to a brutal sexual conquest designed to break her spirit and harness her holy power. Though she narrowly escapes, the Demon King becomes obsessed with claiming the fallen knight as his own while continuing his hedonistic reign with his subordinates.
Holy Knight Ruvyrias is captured by the demon army and subjected to brutal assaults as the Demon King attempts to break her will through a sensory link. Although she manages a narrow escape, the chaos escalates when the weakening seal of the former demon king Shout drives a horde of orcs into a mindless frenzy, leaving the Demon King's own companions vulnerable to their lust.
Holy Knight Ruvyrias is defeated and corrupted through a combination of physical assault and a deceptive illusion, eventually swearing fealty to the Demon King. Meanwhile, the chaos spreads as other women, including Lifulia and Iris, are subjected to brutal encounters with berserk monsters and mutated creatures.
Following the successful resealing of the former demon king, the new demon king celebrates the end of the war by hosting a decadent victory orgy. To reward his army, he offers the holy knight and the holy maiden as prizes for the soldiers, while his sister deals with the lingering energy of the previous ruler through her own carnal encounters.