Sweet Baby 2 is the denouement of a dramatic story in which the incredible Nikky Andersson culminates her Machiavellian plan. Estelle has accomplished her wicked plan and has eliminated all the obstacles. Although Inspector Duroc suspects her, he has no proof. Therefore, this lovely woman can now pocket the inheritance. Suddenly, the Attorney gives her some terrible news: she has a half sister whom she had never heard about. But that doesn't bother her it simply means one more murder...