The First World War devastated Europe. Davos, the noble spa town in the Swiss Alps, on the other hand, seems like an oasis of peace. But behind the scenes, neutral Switzerland is at the center of a brutal battle between the secret agents of the world powers. The young nurse Johanna Gabathuler unexpectedly finds herself between the spies' fronts: to win back her daughter, she becomes embroiled in a deadly game with the German secret service - and suddenly becomes the final touch in a risky plan that decides between war and peace.