In a society where the Mark of a submissive or dominant at sixteen dictates one’s entire future, eighteen-year-old Hannah is signed over by her guardians to the prestigious Aethelgard University to begin her final preparations. The transition is far from easy; during a grueling two-week induction, Hannah is forced into clinical physical acclimation—including the mandatory wear of her first training devices—which triggers her stubborn, whiny "brat" instincts. Everything changes when she is matched with Julian Thorne, a high-tier Dominant known for his unwavering strictness and deep capacity for kindness. As they navigate a curriculum that ranges from dry history lectures to intense "hands-on" labs where they must master positions and tools together, Hannah must learn to trade her defiant pouting for genuine trust. While Julian is firm in enforcing the school’s rigorous standards and her own daily obedience, he remains a gentle protector who promises that while her manners are non-negotiable, her heart and boundaries will always be safe in his hands.