The knight Bořek sets off on the trail of his missing son. Little Jan has run away from home, rushing after a dream, an illusion about the holy mission of children. His aging father searches for him in every possible way, trying to catch up with his son, but he arrives everywhere too late. Gradually his image of the boy becomes more blurred; Bořek’s state of mind starts to crumble and the landscape through which he travels ever onwards increasingly resembles his mental landscape. In the end he is unable to distinguish between reality and a theatrical representation of the myth.