This dystopian action scifi reminds a bit of the old Mad Max movies. Mankind managed to almost wipe itself out. It partly hides behind a wall that keeps the virus infected Scotland from saved England. Then it proves that on the other side of the wall, people still live.
There in Scotland a survival of the fittest took place resulting in punk-like gangs not unlike the wild bunch in Mad Max. Of course a person with ties to both camps has to go to the enemy camp to get something and she is tossed between both sides.
“Doomsday” is perhaps not a great, but a pretty amusing film for when you feel like scifi dystopia.