[1] World War II, 10 May 1940: The forces of the German Wehrmacht start the Battle of France and invade the Netherlands, Belgium and Luxembourg.
While inspecting tracks close to the border early in the morning, Swiss railway official Emil Tschumi stumbles across German refugee Werner Kramer.
At a railway station, Werner Kramer witnesses an old German refugee being hauled off by Swiss border police because he attracted attention for having neither proper documents nor local currency to buy a train ticket.
However, like many other wealthy people, the family have already sought refuge in the Swiss heartland, believing that the Alpine region is a safer place to be in case of a German invasion.
Kramer lives in constant fear of being discovered and reported to the authorities who would then inevitably send him back to Germany.