David Tennant and Michael Sheen (playing themselves) were due to star in a production of 'Six Characters in Search of an Author' in the West End. The pandemic has put an end to that, but their director (Simon Evans) is determined not to let the opportunity pass them by.

Aziraphale and Crowley, of Heaven and Hell respectively, have grown rather fond of the Earth. So it's terrible news that it's about to end. The armies of Good and Evil are amassing. The Four Horsemen are ready to ride. Everything is going according to the Divine Plan...except that someone seems to have misplaced the Antichrist. Can our heroes find him and stop Armageddon before it's too late?