In the near future, Norway is occupied by Russia on behalf of the European Union, due to the fact that the newly elected environmental friendly Norwegian government has stopped the all important oil- and gas-production in the North Sea.
The first two seasons were excellent, where a very complicated scenario was presented from the perspectives of people involved. Every party was portrayed as humans with their respective motivations.
Season Three was an utter mess. The powers that be have decided to turn it into a regular, multi-season TV show; therefore this was a _transition_ season.
Consequently, there were too many mini plots of no significance to the existing fundamental premise of the show.