The salvage team that went to the moon resurrects an old project: towing an Antarctic iceberg to a drought-stricken island off the California coast. Their plan involves using the Vulture's engines to direct the iceberg's course. The competition is a well-funded and unscrupulous corporation.

Harry and crew run into extreme difficulties in bringing an iceberg to California to be used as a source of water. The engine they use to steer the mountain of ice breaks loose and the iceberg drifts into the shipping lanes.