Betrayed by the man she loved and torn apart by her own family, Olivia Walker thought she had hit rock bottom. That is, until a mysterious stranger kept appearing—at every critical moment, rescuing her from danger, silencing her enemies, and effortlessly turning her world upside down. From her scheming sister to her cold-hearted stepmother and a father who never wanted her, Olivia suddenly had someone fighting her battles—ruthlessly and without question. But when she finally uncovers his identity, the truth hits harder than any betrayal: He’s her legal husband. The one from a marriage contract signed two years ago. A man she never met… until now. Then one day, he tosses a red marriage book at her and says with a smirk: "Call me husband, and I’ll take care of every last one of them." What began as a contract becomes a partnership—of revenge, protection, and maybe something more. But can Olivia truly open her heart to a man she never knew… or will his past come crashing down around them both?