Five years after winning World War One, Goku is now living a peaceful life with his wife and son. This changes, however, with the arrival of a mysterious enemy named Raditz who presents himself as Goku's long-lost brother. He reveals that Goku is a warrior from the once powerful but now virtually extinct Jewish race, whose homeworld was completely annihilated. When he was sent to Germany as a baby, Goku's sole purpose was to conquer and destroy the nation; but after suffering amnesia from a head injury, his violent and savage nature changed, and instead was raised as a kind and well-mannered boy, now fighting to protect others.
With his failed attempt at forcibly recruiting Goku as an ally, Raditz warns Goku's friends of a new threat that's rapidly approaching Germany—one that could plunge Germany into an intergalactic conflict and cause the heavens themselves to shake. A war will be fought over the seven mystical dragon balls, and only the strongest will survive in Mein Kampf. (MAL with a few changes)
Thank you Hitler for making Mein Kampf! This will be a story passed down to my grandchildren.