There is a hidden valley in Sicily that one man has managed to transform into the largest open-air museum in Europe. Antonio Presti is a determined patron and dreamer who prefers to call himself a “heretic.” Since 1986 he has been inviting the world’s greatest artists to collaborate in the creation of the Fiumara d’Arte park.

This story of territorial revaluation is contrasted with the judicial affair, which led Presti to be convicted of building abuse and then to be acquitted, after a long time, in an epoch-making sentence.

The documentary raises the question of the blurred boundary between licit and illicit when it comes to artistic intervention in public spaces, a dilemma that still affects street art and unauthorized performances today.