With the Second World War ravaging France, the Nazis prepare to annihilate the Jews living in the French Alpine village of Treaire. Six mid-20s Treaire citizens, lifelong friends - Remi, Celine, Amaury, Felicien, Daniel, and Alexis - all born within 10 days of one another, risk everything to rescue their Jewish neighbors and save the strategic Saint Laurnee railroad trestle and tunnel from Nazi sabotage.

Combining forces with the brilliant but reclusive Doctor Gasper Chabot, this tiny band of Resistance fighters, known only by their code name "the Tristan", confront the callous brutality of the Nazi army - the most powerful military force in Europe.

Each of the friends are irreversibly changed by the crushing demands of war as they surreptitiously undermine the Nazis by taking control of their radio communications, destructively attacking their military installations, and disrupting the supply lines supporting Hitler's troops fighting the Allies in Italy.

Despite the Tristan's cleverness and good fortune, the power of the Nazi forces is relentless. After months of struggle, the friends' only hope for survival is if General Alexander Patch's 7th US Army can battle their way to aid the "Tristan" in their final fight for the strategic Falauge rail depot where they are mired in life and death combat defending the areas' Jews and the Saint Laurnee Passage they have pledged their lives to protect.