Join a motley team of treasure hunters as they brave the waters near a string of volcanoes to recover a fortune in pearls! Captain Chris Hanson has recruited an over-the-hill deep sea diver, a claustrophobic inventor and a troop of beautiful Polynesian pearl divers to plunder the sunken wreck of the Arianna. But their mission seems doomed even before they leave the dock! The local government orders Hanson to transport 30 criminals to a prison nearby island. As they sail toward the treasure, they encounter strange lights on the horizon, bizarre sounds from the darkness, intense heat and thousands of dead fish littering the ocean surface. Are they bad omens, or merely freaks of nature?