The Daleks have decided to take over DC earth. They aren't going to destroy the planet just the people.
Green Lantern Corp helps but no other space help.
Villains are taking this as a chance to loot the cities.
All are trying to stop them.
There are 5,000 Daleks. All the ships are disabled so just the Daleks and tech.
The Doctor can't get to DC.
All of DC military has been disabled.
Everyone is bloodlust.