Fifty years after its tormented release in theater, this documentary tells the birth and the scandal of  the “Il portiere di notte”/”The night porter” which left its mark on italian cinema and culture. Even today, “Il portiere di notte” continues to provoke violent and conflicting reactions. In order to make up the profound reasons that drove Liliana Cavani to tackle such a controversial and lacerating theme, the documentary retrace the most important moments of her personal and artistic life, interweaving them with the making of the film and its fortune.