While on a diplomatic mission to the city of Constantinovale, Casius is led to a brutal slave market where he purchases a noble Romanian girl named Bianca to save her from abuse. However, their relationship takes a dark turn as Casius becomes consumed by a twisted obsession, coinciding with the revelation that Bianca belongs to a cursed lineage of monsters. When Bianca's brother arrives to reclaim her, Casius is forced to face the tragic reality of her nature and the cost of his misplaced mercy.
Casius, a Venetian ambassador using the slave trade as a cover for his espionage, purchases Cecilia, a fallen noblewoman, hoping to provide her with a safe haven. However, their brief peace is shattered when a group of mercenaries arrives claiming to have found Cecilia's missing daughter, Flora. The encounter turns violent as the mercenaries reveal their true, brutal intentions, ultimately kidnapping Cecilia and leaving Casius heartbroken and powerless.
Casius, a Republic spy in Constantinovale, forms a complex and eventually affectionate bond with Myia, a mute slave gifted to him. However, their fragile peace is shattered when the "Sages of the Hill," a legendary assassin group, reveal Myia's true identity as a former member of their order. As war erupts across the land, Myia is forced to make a heartbreaking sacrifice to save Casius's life, leaving him devastated as the Eastern Seven Year War begins.