The End of the World is coming, which means a fussy Angel and a loose-living Demon who've become overly fond of life on Earth are forced to form an unlikely alliance to stop Armageddon. But they have lost the Antichrist, an 11-year-old boy unaware he's meant to bring upon the end of days, forcing them to embark on an adventure to find him and save the world before it's too late.
Aziraphale and Crowley race towards Tadfield airbase as they attempt to prevent Adam and the Four Horsemen from beginning the apocalypse. But one has been discorporated and the other is trapped in a flaming motorway. Will they get there in time?