Britain, A.D. 117. Quintus Dias, the sole survivor of a Pictish raid on a Roman frontier fort, marches north with General Virilus’ legendary Ninth Legion, under orders to wipe the Picts from the face of the Earth and destroy their leader, Gorlacon.

A 14th century Crusader returns with his comrade to a homeland devastated by the Black Plague. The Church commands the two knights to transport a witch to a remote abbey, where monks will perform a ritual in hopes of ending the pestilence.