Three characters, three symbolic stories of the Agri Valley, a small community in Basilicata facing an unexpected fact: the discovery of one of the greatest oilfields of the world. An exceptional event, which, for some strange joke, has taken place in one of the poorest and uncontaminated areas of the region, inside a national park. How can oil and environment live together? Gianni Lacorazza, journalist and editor, tries to answer.