In San Franc isco, th e sportsm an Kay Hoog  tells to th e members of a  club th at he h as found a me ssage in a bottle with a m ap from a  Harvard&#39 ;s missing prof essor tellin g about  a treasure  of an Inca lost civilizati on still al ive. He decide s to go  to Peru  to seek the gol d. However,  members of the sec ret crimi nal organizat ion &qu ot;The Spi ders&am p;quot; leaded by Lio S ha break in Ka y's  mansion d uring t he night and s teal the map.  Kay Hoog t ravels to Peru,  where he re trieves his map and a docu ment abou t the Dia mond Shi p from The Spiders. Lat er he sav es the Pri estess of the  Sun Nae la and b rings her to San Franci sco. However , The Spiders  kill Naela an d Kay Hoog  promises revenge for th e death of his love　　I n San Fr ancisco , the spor tsman Kay Hoog te lls to the  members of a  club that h e has found a  messag