After fleeing a killer organization, Anna infiltrates the William mafia family as a maid to avenge her father. Her mission shifts when she meets Edward William, the honorable heir whose kindness challenges her resolve. As she uncovers the family’s dark secrets, Anna battles between duty and the growing affection for Edward. When the true mastermind behind her father’s death emerges, she must decide: will vengeance destroy the only man who sees her humanity, or can love redeem a world built on blood?