Lieutenant Erling Riiser is on his way back to Norway after a long stay in Afghanistan. Much has gone wrong, several soldiers are missing from the Hercelus-plane. After only one day in Norway, Erling receives a text message saying an old acquaintance from Afghanistan is in Oslo – which can mean only one thing: A woman’s life is in danger

When the Nazis secure a heavy water plant to realize their plan to create an atomic bomb, the Norwegian Allies struggle to sabotage the operation.