Johnny (Danny Lee) leads intrepid explorers into the dark Indian jungle to find the mysterious, giant apelike creature that lives there — the mighty Peking Man. Johnny finds the creature along with his beautiful but scantily clad human ward and brings both of them back to the big city.

The creature, however, proves he can never be chained as he runs amok in Hong Kong, destroying everything that gets in his way in this campy classic.