When the TARDIS materialises on an apparently deserted Northumbrian beach, Steven disputes the Doctor's claim that they have travelled back to the eleventh century. The discovery of a modern wristwatch in a nearby forest merely reinforces his opinion.But it is 1066, the most important date in English history, and the Doctor's arrival has not gone unnoticed. Observing the appearance of the TARDIS is a mysterious monk who recognises the time-machine for what it is. He also knows that the Doctor poses a serious threat to his master plan - a plan which, if successful, could alter the future of the entire world...
