Politically oriented documentary film where Manuelli casts a shadow on the Po Delta reclamation works launched in the fifties by the agrarian reform (and before that by The Fascist regime) and that for decades were considered as the miracle recipe for that area. From the seventies on, a series of studies started to show that the natural balance and the landscaper had been badly upset by the reclamation works. According to the director the whole process had not relieved neither misery nor unemployment or emigration flows. The film deeply investigates these phenomena and sets out the creation of a Natural Park likely to preserve a unique landscape.