At the end of WWII, Nazi officials spirited the living head of Adolf Hitler out of Germany to a hiding place in the South American country of Mandoras, in order to revive the Third Reich at a later date. By the 1960s, the time has come, so a top scientist is kidnapped in order to help keep Hitler alive. This film is a re-edit of The Madmen of Mandoras released in theaters in 1963.

A group of Nazi survivors save Hitler's brain keeping it alive in a huge jar hooked up to a machine. The Nazis plan to release a deadly gas destroying all life on the planet. To ensure their success they kidnap Professor Coleman the only man on the planet with the antidote to the poison gas.

A down-and-out reporter and a fashion designer fall in love in Paris.