Esther is pressured to develop a vaccine against the resiliently mutating bacterium; PM Heyerdahl employs stringent measures to prevent the disease from spreading; Charlie gets progressively sick; Ariel's brother wants her to join him.
In the year 2037, an enormous wall surrounds Norway, where its people enjoy privileged and sheltered lives in a self-sufficient Nordic paradise. But when a deadly pandemic breaks out, the inhabitants soon realise that the wall intended to protect, is instead holding them prisoner.