But when the Germans occupy Paris, father and daughter flee to Saint-Malo on the Brittany coast, where Marie-Laure’s agoraphobic great uncle lives in a tall, narrow house by the sea wall. In another world in Germany, an orphan boy, Werner, is enchanted by a crude radio. He becomes a master at building and fixing radios, a talent ultimately makes him a highly specialized tracker of the Resistance. Werner travels through the heart of Hitler Youth to the far-flung outskirts of Russia, and finally into Saint-Malo, where his path converges with Marie-Laure.