14. century Franciscan monk William of Baskerville and his young novice arrive at a conference to find that several monks have been murdered under mysterious circumstances. To solve the crimes, William must rise up against the Church's authority and fight the shadowy conspiracy of monastery monks using only his intelligence which is considerable.

An unconscious man is washed ashore on the beach of a small French village during a heavy storm. A retired doctor takes care of the unconscious stranger. When the mysterious man recovers, he can't remember a thing...he does not know his name, he does not know where his flashback memories come from, and he does not know why the access code for an anonymous Swiss bank account is implanted in his thigh. As he seeks his own identity, things quickly become dangerous. There are attempts to kill him,...