A gripping story of courage and female emancipation. In Lizzanello, a small town of a few thousand souls, a bus stops in the main square and a couple gets off: Carlo is a son of the South and is happy to be back home; while Anna, his wife, born in the North, is sad and worried: what life awaits her in this unknown land? Even thirty years after that day, for the people of the town, Anna will still be "the outsider", the different one, the one who does not go to church, the one who does not walk around the village, the one who is not interested in gossip. And Anna, proud and elusive, will never bend to the unwritten laws that oppress women in the South. She will succeed thanks to the love she feels for her husband, a love whose strength is clearly perceived by Carlo's older brother, Antonio, who falls in love with Anna the moment he sees her. Later, she will do something truly revolutionary: she will apply for a post in the post office. 'The mailwoman', as Anna wants to be called, will become the invisible thread that unites the inhabitants of the village and their stories. First on foot and then by bicycle, proudly wearing her uniform and cap, she will change life in Lizzanello.