There are flying dinosaurs in London parks and the Emperor Winston Churchill has the Doctor locked up in the Tower. All of history is happening at once because time has stopped at 5.02pm on 22 April 2011 – the date of the Doctor’s death.
Time is dying and the only way the Doc can see it living is through his murder at the lake. River Song, though, thinks she can save the Time Lord and the universe. At her wedding to the Doctor, he whispers something in her ear – his plan for escape.
In the final scenes we discover that the Doctor is not dead and used the Teselecta as a diversion. The Doctor is alive and ready for the Christmas special!