In which a fragile brigantine, manned by a mixed crew of islanders and mariners, ventures to seek the treasures of the pearl oyster beneath tropical waves, only to be ensnared by the treacheries of natives and half-breeds alike. Amidst fierce assault and desperate skill, the maiden Annatoo and the stalwart Samoa mount a gallant defence and daring escape, their courage flashing like muskets in the surge of the chase.