Pacte Sacré plot
After a fire in her house, the spry grandmother Mamie Jo finds herself on the street. A problem for Mamie Jo, because she has been responsible for the education of her two grandchildren Jules and Juliette for several years. At her wits' end, she takes the children to their natural father Jean-Noël. However, he knows absolutely nothing about the existence of Jules and Juliette, and fears the reaction of his wife Marie-Ange, who is struggling with depression. Nevertheless, Jean-Noël agrees to temporarily take the twins home. Now all he has to do is come up with a credible lie to tell Marie-Ange.