The rich and ruthless Mr. Lloyd takes home Mary Charlton—a girl driven to the edge of sanity in prison—to be his personal 'pet'. However, Mary is far more dangerous than she appears; her derangement is a mask for a soul burning with a desire for vengeance against the foster family who framed her. As she navigates her captor's dark world, a lethal game of cat and mouse ensues. Between Lloyd’s obsessive control and Mary’s mysterious secrets, the two find themselves falling into a dark romance as the truth behind Mary’s past begins to untangle. It’s a story of redemption, where the broken girl might just become the master of the man who thought he owned her.