It all begins on a full moon night in the Palace of the Popes in Avignon. For Estelle's grandfather, the palace's assistant curator, the fate of their family, the Esperanzas, has always been linked to the revelation of a prophecy supposedly predicting the future of the world until the end of the fourth millennium... When a series of events seems to confirm the old man's obsession, the young woman has no choice but to plunge into the adventure. At the crossroads of a fantasy thriller, a family saga, and a romantic quest, The Prophecy of Avignon takes us on a unique adventure that gives the Palace of the Popes its starring role.