Doctor Who - Past Doctor Adventures - 17 - The Infinity Doctors

"Sing about the past again, and sing that same old song. Tell me what you know, so I can tell you that you're wrong."

Gallifrey. The Doctor's home planet. For twenty thousand centuries
the Gallifreyans have been the most powerful race in the cosmos. They
have circumnavigated infinity and eternity, harnessed science and
conquered death. The are the Lords of Time, and have used their powers
carefully.

But now a new force is unleashed, one that is literally capable of
anything. It is enough to give even the Time Lords nightmares. More than