 In 1863 a little known South Pacific island called Krakatoa exploded with enough force to be heard nearly 3000 miles away. Doug and Tony materialize days before this explosion and meet a professor there to investigate the volcano and his lovely daughter - and a small group of superstitious natives. Professor Holland is sure the volcano s explosion is decades in the future and cannot be persuaded otherwise - but he may be deceiving everyone, even himself. Then Doug and Tony discover an error in the date calculations that suggests they re far closer to the fateful day than they first thought.