all right to the BBC. six of the doctor cum to stop a old en-emery from killing the over doctors ,the tardis and the universe. six doctors seven companions one foe . doctors William Hartnell First Doctor, Patrick Troughton Second Doctor , Jon Pertwee Third Doctor, Tom Baker Fourth Doctor, Peter Davison Fifth Doctor ,Colin Baker Sixth Doctor. companions Ian Chesterton William Russell ,Jamie McCrimmon Frazer Hines ,Jo Grant Katy Manning , Romana Lalla Ward ,Nyssa Sarah Sutton ,Peri Brown Nicola Bryant , Brigadier Alistair Gordon Lethbridge-Stewart Nicholas Courtney

Stranded on a parallel Earth, the Tenth Doctor finds himself mentoring a traumatized child soldier enlisted in a hopeless war to save humanity. With an endless number of mysteries in sight -- from the enigmatic alien invaders they call Angels, to the strange machines known as Evangelions used in the planet's defense, to the shadowy maneuvers of those in power -- the Doctor is drawn deeper and deeper into a web of mistakes and sins that threaten to consume all humankind. In time, he'll face the darkest question of them all: what if there are some worlds -- and some children -- even the Doctor can't save?

Three shall lav us all, Fiercer then a ranging fire, Hiding in the darkest shadows, And with more power than the great wolf, These cats shall save star, mountain, sky, fire, and blood.