In another King Kong installment by Ishiro Honda, the giant ape monster's skills are required for a science project by Doctor Who and his helpers. When a mechanically devised robot version of the creature cannot do the job, the team of scientists must go and retrieve the real King Kong himself. But no sooner do they get their hands on the enormous beast than they realize they are no match for a creature of his size. Calling on his robotic imposter for help, the scientists unknowingly bring terror upon themselves and a battle to the death between the two threatens to level all of Japan! This is King Kong vs. MechaKong in a battle to the death!