South of France. In the sultry August heat, Geronimo (Céline Sallette), a young social educator, tries to ease tensions between the youngsters of the St. Pierre neighborhood. The mood changes when Nil Terzi (Nailia Harzoune), a teenage girl of Turkish origin, flees an arranged marriage, running to the arms of her gypsy lover, Lucky Molina (David Murgia). Their escape sparks hostilities between the two clans. When the jousting and the musical battles begin, Geronimo struggles to quell the ensuing unrest around her.