To marry the heir of the Kunhyang Group, Cha Jung Won enters a wealthy family under a false identity, borrowing her friend's name. However, the woman who appears before her as her mother-in-law, Han Hye Ra, is none other than Jung Won's biological mother. Hye Ra abandoned her daughter to escape poverty and gain power. Jung Won, scarred by a father framed for murder and a mother who left her, confronts Hye Ra as her future mother-in-law. But just before the wedding, Jung Won learns Hye Ra is her birth mother and vows revenge. A fierce war between two women continues amidst lies and betrayal. In a world where everything collapses with lies, only blood is real. Will the truth that the blood reveals trample on the lies and win, or will it be swallowed by another lie?