During a heatwave in Marseille, three roommates are confined in their apartment. From the balcony, they look out at their mysterious neighbour, about whom they indulge in all sorts of fantasies. However, late into the night, an ordinary conflict turns into a bloodbath. They find themselves trapped in a terrifying and delirious affair, with their freedom their only quest. In this unique closed-door film, the great horror classics are renewed with a dash of humour and a powerful feminist message.