The 1st Intensive Support Battalion is unique in that it is exclusively made up of female elements. On that day a new contingent of recruits must arrive at the barracks. So we go to look for them at the station, we escort them to the barracks, we install them. As in all barracks in the world, the "room" is unwelcoming, the visit to the quartermaster uninviting, the incorporation visit indiscreet and the hairdressers just as little talented. But, after this first disconcerting contact, the young women will get used to the demands of the officers while naturally rediscovering the traditions established for a long time by their brothers in arms: they "make the wall", meet in a small cafe. where the waiters are not shy, sing songs from the guardhouse. Little by little, however, the barracks were transformed: the dormitories became pretty, flowers replaced weapons and charm was military harshness. Complications will arise because of the colonel who is keen to participate in the major maneuvers, which the general, even very chauvinist, takes a dim view. Victims of a dark scheme, the colonel's troops will have to face a strong-sex team on a rugby pitch to be selected.