Heinrich von Hitler leads Nazi Germany in this alternate history. After Japan's conquest of Hawaii and further Pacific triumphs—including crippling the Panama Canal's Gatun locks and bombing the Manhattan Project at Los Alamos—alarm grows within him over Japan's surging technological and military edge, despite their alliance under the Tripartite Pact.

Following Germany's victory over the Soviet Union, forcing Stalin's surrender in the Urals, he redirects ambitions toward territorial expansion. He declares war on Japan and launches offensives against British India and the United Kingdom. German paratroopers strike Kolkata while ground forces push south toward Cochin, aiming to connect with units advancing up India's western coast.

Concurrently, he orders the invasion of Britain. German troops gain footholds in southeast England, compelling the British government's retreat to Inverness, but the campaign falters. Japanese naval power intervenes decisively, shattering the German beachhead. Simultaneously, a US invasion attempt through Brittany is thrown back by the Wehrmacht.

His strategic deployments face further setbacks: a Kriegsmarine force sent to the Indian Ocean is ambushed and destroyed by Japanese submarine-carriers at the Bab el-Mandeb; German advances stall in Mongolia against combined Nationalist Chinese and American-backed resistance; Japanese bombers obliterate the invasion headquarters in New Delhi; and antisubmarine operations cripple the U-boat fleet in the Indian Ocean.

He remains a key figure during the peace negotiations involving Germany, Japan, Britain, and the US, which conclude around 1950.