Isabelle and her niece Nina are opening a "fasting and detox" cure in the heart of Provence, with the help of Baptiste, yogi and handyman, Jessica, tantric masseuse, and Maxime, attractive equitherapist. Among the first curists, four overweight adolescents sent by the Town Hall; Marion and Lio, his skinny sister who imposes the treatment on him “for his own good”; and their friend Émilie who, relieved of her extra pounds, barely discovers when she arrives that her beloved husband swoons in the arms of a man ... clearly overweight!