"Mom: The Complete Third Season" - After years of questionable choices, single mom Christy Plunkett is now sober and trying to get her life back on track. However, she's tested daily by her newly sober mother, Bonnie, and her relationships with her own kids - her newly engaged daughter and preteen son who'd rather live with his father. With her dysfunctional family and life's many setbacks, it's always an uphill battle.