A severe storm and an accident prevent the return to the continent of two visitors to the island on which the maximum security prison is located. Louise - a peasant woman from a small village in central Italy, a mother of five, visits her husband, who is serving a sentence for the murder of two people. Paolo, a former philosophy teacher, came on a date with his terrorist son. Warden Nitti, who has family problems due to his uncontrollable cruelty, accompanies these visitors and has no right to leave them unattended. The forced stay of these three people together on the island will change their lives forever.