Orion, a young man whose dormant ghoul contract is unexpectedly activated, thrusting him into a world filled with sensuality, intense emotions, deep passion, and, surprisingly, love. These newfound concepts become Orion's driving forces as he becomes entangled in the complex and dangerous web of vampire society.

Orion serves the enigmatic Lady Agnieszka, the formidable matriarch of House Toreliari, alongside her two daughters, Astrid and Astria. Forbidden from any kind of relationship interaction with them due to his rank, Orion must navigate the perilous chessboard of his master's desires in a world characterized by organized crime and supernatural intrigue.