Two young people, Pieri Cossutti and Gemma Vianello, live their love in the town of Stella, an alpine village in Carnia located next to a large dam, not far from the border between Italy and Austria.
The Second World War provokes the call to arms of Pieri and his brother Olinto, who must leave his wife and little son.
At the time of the armistice of 8 September, Pieri and Olinto are in Albania, from where - with other Italian soldiers who refuse to surrender to the Germans - they begin a long march to return to their homeland.
Pieri and a few others arrive in Stella and are able to courageously prevent the Germans from blowing up the great dam.
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