After years away at school, Celeste returns home to tragedy. Her grandmother Alice, the woman who raised her after the death of her parents has passed. Leaving behind a castle, a dangerous inheritance, and a society that disguises brutality as custom, trading fairies as servants. As Celeste settles into her new life, she's aware she is being watched. A cloaked figure follows her through streets and shadows, blurring the line between coincidence and being a threat. In a world where fairies are openly bought and sold, Celeste is forced to confront the trade she despises. Against tradition and her own conscience, she purchases a combat fairy for protection. Shade is powerful, sharp-tongued, and unsettlingly beautiful. In exchange for guarding her, Celeste gives him freedom within the castle and ensures his spirit can never be owned again.But Shade wants more than to protect her. He watches too closely. Follows too silently. Protects too fiercely. What begins as a reluctant alliance, twists into something dark. In a world where humans and fairies are forbidden even trust, obsession grows, the danger closes in, and love becomes an act of defiance that must be kept within the castle walls. Some traditions are built on blood. Some love stories are born in the shadows and some choices can never be undone.