Robert McCall finds himself at home in Southern Italy but he discovers his friends are under the control of local crime bosses. As events turn deadly, McCall knows what he has to do: become his friends' protector by taking on the mafia.

Luigi looks after his mother and his little brother since their abusive father Franco left when he was 10. Now a young man brimming with rage, he joins a far-right gang in search of belonging just as Franco shows up again in their life.