A robot duplicate of King Kong, Mechani-Kong, fails to find radioactive Element X at the North Pole, prompting the evil Doctor Who and Madame Piranha to kidnap the real Kong. They also capture Kong's love interest, Lt. Susan Miller, and her companions.

King Kong Escapes
King Kong, a powerful giant ape, is forced into a brutal fight against its mechanical rival, Mechani-Kong, after being captured by the cunning Dr. Who who seeks to extract the valuable resource Element X.