South of France. In the sultry August heat, Geronimo, a young social educator, tries to ease tensions between the youngsters of the St Pierre neighborhood. The mood changes when Nil Terzi, a teenage girl of Turkish origin, flees an arranged marriage, running to the arms of her gypsy lover, Lucky Molina. 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.
