The cases of master criminal defense attorney Perry Mason and his staff who handled the most difficult of cases in the aid of the innocent.
Global panic ensues when it is revealed that a mysterious UFO is actually a giant turkey-like bird that flies at supersonic speed and has no regard for life or architecture.
Aliens, contacting scientist Adam Penner, inform him that they have been on the moon for twenty thousand years, undetected due to their invisibility, and have now decided to annihilate humanity unless all the nations of earth surrender immediately. Sequestered in an impregnable laboratory trying to find the aliens' weakness, Penner, his daughter, a no-nonsense army major and a squeamish scientist are attacked from outside by the aliens, who have occupied the bodies of the recently deceased.
