Two French vagrants, Pierre and Jean, decide to take the pilgrimage route from Paris to Santiago de Compostela along the traditional Way of St. James. As they walk along a roadside in France, they encounter a man in a black cape who tells them to sleep with a prostitute and have children with her. Then the pilgrims reach an inn, they find a police sergeant and a priest discussing the nature of the eucharist and transubstantiation. The priest is taken away by staff from a nearby mental hospital. Later, the pilgrims find shelter for the night on a farm, while a secret Priscillian sect is meeting nearby. Their secret service involves ritual repetition, a short statement of faith, followed by sexual encounters between the male and female congregation.