Authors notes:

This follows directly of off series 1 of Tales of Trenzalore

Series 1 wasn't too great, it was mainly writing exercises so I will resume everything you need to know.

The Doctor defended Trenzalore for 83 years. Death and war surrounded him but now he found himself in a new place… Galifrey.

An attack of weeping angels sent him back in time and, quite by luck, through the pocket universe to his home planet. He has to get back, he must protect Trenzalore.