Elba Island, Prison of Porto Azzurro. Through the eyes of an employee engaged in the prisoners re-education, we enter into the daily life of the penitentiary: the film is the story of a typical day, from dawn to dusk, until the cells are closed and the staff leads to home the sound of bolts. A logbook, ordinary and minute, the social and existential conditions of deprivation of freedom in a country that seems unaware of its existence.