June 1940. As German troops pour across France, the veteran soldier and adventurer Richard Hannay is called back into service. In Paris an individual, code-named 'Roland, ' has disappeared and is assumed to be in the hands of Nazi agents. Only he knows the secret of the Thirty-One Kings, one upon which the future of Europe depends. Hannay is dispatched to Paris to find Roland before the Germans overrun the city. On a hazardous journey across the battlefields of France Hannay is joined by old friends and new allies as he confronts a ruthless foe who will stop at nothing to destroy him.