Given that Stephen Moffat is likely to adopt a darker edge in his production values, I'd envisage an 11th Doctor movie to do the same.
DAY OF DELIVERENCE
The Doctor & Amy Pond land in Brighton in summer 2011 hoping for a weeks break. However the streets are deserted and no electronic equipment is working. Everyone has vanished.
While searching a deserted bar they stumble across an unconscious Ben Chatham. Reviving, Ben explains to them over a drink that the people vanished two months ago, apart from a squad of UNIT troops & himself who were in UNIT's Hove base inspecting some neolithic artifacts in the science lab. Since then giant rats have appeared in the towns and countryside & killed many troops. The Doctor speculates that the artefacts may contain a clue as to what has happened and they set off for the base in the TARDIS.
Inspecting the artefacts, the Doctor finds a dagger which emits a strange signal only he can hear. He recognises Time Lord technology.
Following a number of encounters with the rats, The Doctor & Ben discover that a utopian organisation called 'The Sons of Tomorrow' is behind the mystery. All people have been shrunk to the size of ants and placed in suspended animation, supposedly to allow the earth to return to its natural state. The plan is then to travel to a new larger planet. However the Doctor discovers that the group's leader is the Master who in actual face plans to place all of humanity in a spacecraft & detonate a bomb on it. Ben tricks the Master into boarding the craft himself and then the Doctor launches it prematurely before the miniturised humans have been loaded. The Master has no choice but to defuse the bomb and turn back for earth where he is placed under UNIT arrest after the Doctor has returned humanity to size.