Bernard Coudray has a beautiful family and is happy with his life. That is until Philippe and Mathilde Bauchard move into the house next door. Bernard and Mathilde know each other, they were once passionately in love but went their separate ways. Once reunited, the pair starts a fervent but turbulent affair. Torn between their unyielding lust for each other and the comfort and stability that is their marriages, this really is a case of can't live with and can't live without.