The most epic Doctor Who event ever, as every incarnation of the Doctor - and friends and enemies old and new - unites to push back the threat of the Void: the empty space between universes that has inexplicably become sentient... and hungry! Only by linking together all of the Doctor's lives - and delving deep into the horror of the Void - do the Doctors stand any chance of uncovering the mystery at its heart... and of saving the known universe from total annihilation! But what they find at the center of the Universe That Never Was will prove the most shocking discovery of all.