A Prosecutor frustrated at difficulties convicting the guilty, makes a deal with the devil. 10 years later, the question appears, "When you made your deal, did you ask for the ability to convict the guilty, or did you just ask for the ability to win?".
A pack is made with the devil that a woman become a supermodel and can eat anything she wants while her twin sister gains the weight. When the tenure on her agreement nears the end, her deal starts to backfire on her.