After encountering a Jersey Devil while on a field trip to the Pine Barrens, Elliot and his new friend Uchenna help their weird teacher Professor Fauna rescue the mythological creature from a pair of greedy billionaire brothers.
Crossing paths at an inn, thirteenth-century travelers impart the tales of a monastery oblate, a Jewish refugee, and a psychic peasant girl with a loyal greyhound, the three of whom join forces on a chase through France to escape persecution.