A renowned scientist returns from Africa after being presumed dead, bringing with him a groundbreaking discovery: a method to accelerate plant and animal growth to enormous sizes. He tests his theory with a baby chimpanzee, which he names Konga. As he faces numerous enemies back home, he utilizes Konga to eliminate them. However, Konga's growth becomes uncontrollable, and it wreaks havoc on the city of London, causing chaos and destruction.

Konga
A renowned scientist returns to his former university, the University of California, to carry out a pioneering experiment on a secluded island, seeking to demonstrate the immense potential of his research to the world.