Will and Thomas, freshly christened agents in America’s newly established Office of Strategic Services, are dropped into occupied France with one simple mission:

Help the resistance and sabotage enemy supply lines.

But nothing in war is simple.

The constant fear of discovery tests the limits of Will and Thomas’s relationship. They’re in love, but in war, is love enough?

Then a member of their team overhears a Nazi officer and a scientist discussing an insidious new weapon that could tip the balance of the war, and everything changes.