 The story takes place in the mid-1930s, and details the fight between the United Airmen and their merciless foe "The Doom".The Doom and his men attack Pearl Harbor and invade and takeover Japan until being defeated by the United Airmen, leaving a power vacuum in the Pacific.In the story in DHP, set 2 month's later, Crash and his friend encounter air pirates using left over Doomsmen planes, while the Soviet Union takes advantage by taking over Japan.