Kara has become her boyfriend Tyler's rock; getting him back on his feet after a turbulent time in his life. They're planning on getting married and everything is perfect until Tyler's ex-girlfriend Isabelle returns from rehab and wants to get her life back – starting with Tyler. Kara is immediately threatened by Isabelle who is everything Kara's not – sexy, daring and outspoken. To Kara's shock, Isabelle begins injecting herself into Tyler's life and Kara fears that he may fall back into his bad habits. As Kara's world starts to crumble, she notices that Isabelle may be behind the violent threats against her. What starts off as one woman's desire to hold on to her fiancé and the life they've built together, turns into a twisted game of cat and mouse, as Kara tries to survive the jealous wrath of the "evil" ex-girlfriend.