Annie, the illegitimate daughter of the Grey family, is treated as a servant by her stepmother and stepsister, then sacrificed by her boyfriend Jimmy to the dangerous werewolf godfather Adrian. Expecting hell, she instead finds fierce protection and rigorous training, awakening the truth about her mother's faked death, her family's power grab, and the secret of Moonlight Blood. From a discarded pawn, she rises to become the true mistress of the werewolf clan.