The year: 1983. A suborbital flight to London is mysteriously diverted to a land inhabited by giants.

The travelers are trapped in a human-sized village, where they become the playthings of an inventor (Percy Helton) and his sadistic grandchild (Amber Flower).

When a giant hobo is framed for murder, the Earthlings come to his aid.

The travelers are forced to participate in a highly dangerous mission for the giant leader of an underground political movement.

The earthlings are captured by a sinister gypsy who plans to feature them in his carnival.

The travelers rescue a normal-sized man from the giants, but become increasingly suspicious of his friendship.