Top modern assassin Sylvia Lockwood dies and wakes up in the body of a woman with the same name. Her father died in battle. To survive in The Lockwood Family, her mother disguised her as a boy since birth. Sylvia longs to be a woman, but fears they will be killed if exposed. She plans to flee. Instead, she catches the eye of Valerian Blackwood, the ruthless and powerful lord of The Empire of Aethelgard. Taken to his manor, she begins a life of pecking and matching wits with him to survive.
