Sometime around 500AD, the Romano-British defeated the Saxon invaders at a place called Mount Badon. In the centuries that followed, that victory was linked to the name of a hero - Arthur. Now, on a wet weekend in Wiltshire, Dan and Matt have gathered weekend warriors from all over northern Europe to re-enact this legendary battle. Only problem is, Arthur probably didn't ride out at Mount Badon. And as the rain begins to fall, Arthur's warhorse - Smurfie - doesn't want to play ball.