Summer 1945. The war in Europe is over, but Japan refuses to surrender. When British codebreaker Alan Turing is kidnapped and taken to the Mitsubishi Complex in Nagasaki, he is forced to test the encryption behind Japan's newest weapon: towering hydraulic mecha samurai. Across the Pacific, American scientists Terman, Oppenheimer, Hewlett, and Packard race aboard the experimental submarine Nautilus to complete a revolutionary quantum computer. Inside the Nagasaki factory, undercover agent Natsuki Tanaka risks everything to obtain a single control chip; the key to overriding the mechas' encrypted signals. 'Operation Downfall' is a gripping alternate history thriller where the fate of the world hinges on a stolen chip, a handful of spies, and an alliance of history's greatest minds.
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