When a pilot crashes in the desert during an atomic test, he is captured by stupid looking aliens trying to steal Earth's atomic energies for their own uses. When he is found in a haggard condition...

When a pilot crashes in the desert during an atomic test, he is captured by stupid looking aliens trying to steal Earth's atomic energies for their own uses. When he is found in a haggard condition at his air base, he has no recollection of the events that have happened to him. He spends the rest of the movie trying to find out what happened to him while being chased by his own government, which is accusing him of giving away government secrets