My Husband's Secret Wife (2018)

Recently married, AVERY (28) finds out that her new husband, ALEX (35), has another wife. Devastated, Avery decides that the only decent thing to do is to inform the other wife, MELANIE (30), of Alex's deception. But instead of being angry with Alex, motherless Melanie seeks to steal Avery's son, Jack, and to eliminate the competition.