In 1917, Johanna Gabathuler, a nurse from Graubünden, unexpectedly finds herself drawn into the dangerous world of espionage in Davos, a health resort filled with spies working in secret. To win back her illegitimate daughter, she enters a perilous game with the German secret service. Suddenly, this young nurse becomes a deciding factor in a high-risk plan that could determine whether war continues or peace is within reach.