G-men vs the Black Dragon

After Japanese spies from the infamous Black Dragon Society infiltrate United States borders, Federal Agent Rex Bennett is enlisted by the government to capture them. As Oyama Haruchi, leader of the dangerous paramilitary group, begins to destabilise the United States war effort through sabotage and corruption, Bennett must team up with British special agent Vivian Marsh and Chinese special agent Chang Sing to stop them and help win the war.