Following the downfall of her house, former Viscount’s daughter Leticia lives quietly as a nun. Her life is upended when she is forced into a marriage with a Duke notoriously known as the "Mad Dog." To her horror, her new husband knows exactly who she is, greeting her with, "I've finally found you, my lady." The terrifying Duke is actually Vincent, a former household servant Leticia selfishly mistreated during her childhood! Bracing herself for brutal, sadistic revenge, Leticia is completely thrown off guard when Vincent’s "punishment" turns out to be suffocatingly sweet, obsessive affection. Is this his ultimate revenge, or pure, dark devotion?