The Doctor was feared across the universe. He could face down Daleks without batting an eyelid. Had conquered Cybermen. Fought with Axons and Sea Devils. He was woven into the myths and legends of a hundred different civilisations.
The Oncoming Storm, some called him.
And yet this powerful, terrifying, brilliant man had one true mortal enemy.
A creature in existence which still had the power to send him quivering in his Converse.