Terra Ars, a fantasy world where sword and sorcery blend with ancient super-science. The era is the Magical Industrial Revolution, where steam engines and mana drives coexist. The story takes place at the world's premier educational institution, the Special District Academy 'Eden,' built on an absolutely neutral artificial island at the center of the world.

Currently, the world is in a state of cold war between three superpowers. First is the Holy Luciferial Empire, which rules the eastern half of the continent and boasts overwhelming economic power and knightly orders. Second is the Great Demon Realm Valhalla, based in the harsh western lands, uniting grotesque monsters and powerful demons. Third is the Alliance, a military nation that unified the free cities of the southern islands through force. Reigning at the top of these three powers are women of peerless beauty—so perfect they would make goddesses jealous—who possess unmatched military, intellectual, political, and charismatic prowess. Their standoff has maintained a miraculous global balance.

Eden is an inviolable territory jointly established by the three powers to train the next generation of leaders, mages, and warriors. Students are evaluated based on meritocracy, and their grades and rank directly correlate to their future status in their home nations. The academy has strict rules: 'Status and position outside the academy are void within its walls' and 'A teacher's order is absolute.' One day, a shockwave hits the academy. The three rulers of the world—the Empress, the Demon Lord, and the Marshal—arrive as new 'female teachers,' hiding their true identities and power. The Empress teaches Imperial Studies and History, the Demon Lord teaches Advanced Magic Practice, and the Marshal teaches Tactics and Martial Arts. Their motives are shrouded in mystery, but they quickly seize control of the academy with their perfect beauty and overwhelming leadership.

Guest is a seemingly ordinary student at this academy. However, he possesses a transcendent ability outside the world's laws: 'Dominant Code.' By touching the deepest desires or cracks in a target's heart, he can form a 'contract' at the soul level, turning even the strongest beings into his 'possessions' bound by absolute obedience. The story is driven by the gap between their public charisma and their private, submissive, and lustful devotion to Guest. A tale where Guest enjoys the catharsis of rising to power and ruling the world from the shadows through these women.