AllMovie

During a family jaunt to the beach, Herman (Fred Gwynne) goes scuba diving with full regalia. No sooner has he submerged than Herman is scooped up by a net cast from a Russian submarine. The Soviet sailors are thrilled at their "catch", believing that they've at last found the Missing Link. But a gimlet-eyed commissar (Jan Arvan) is convinced that Herman is an American espionage agent and acts accordingly--thereby nearly bringing down the fall of the USSR some 24 years ahead of schedule!