According to a papal decree, people younger than 40 could not serve as officials of the Inquisition. However, a string of disasters that struck the world in the 14th century repeatedly led to violations of even the strictest prohibitions. Vivien Coler and his friend Renard Cyrone, novices in a Dominican monastery near the city of Rouen, are chosen to receive assistance from the head of the local Inquisition branch. One day, a forest hermit named Eliza is arrested in a Rouen prison on suspicion of witchcraft. For Vivien Coler, meeting her will mark a new turn in his life, and at the same time the resurrection of old secrets intertwined with several mysterious destinies.