Spring of 1945. The Third Reich is on the verge of defeat, the regime of the Fuhrer at death.
Scientists from Anenerbe freeze Adolf Hitler in a secret cryo-laboratory for 500 years. US troops do not find the secret room with frozen Hitler, but they find some dangerous device, possibly of extraterrestrial origin. It made them a superpower and destroyed the USSR.
In 2020, aliens infect the planet with a zombie virus. The key to salvation is that same artifact.
April 20, on his birthday, due to a malfunction in the cryochamber, Adolf Hitler awakens. With the help of a time machine, he must go to the past and save the world.