"Twenty-five degrees north of the equator on the planet
Krishna lies the Banjao Sea, the largest body of water on this planet. And in this sea is found the Sungar, home of legend and mystery. Here under the scorching rays of the high hot sun, the beaked galleys of Dur and the tubby ships of the Jazmurian slowly rot in the unbreakable grip of a vast floating continent of sea vine. Nothing, once caught in this web of weed, can escape..•
Barely had Dirk Barnvelt written these words than he learned that he would shortly find himself isolated in the middle of this terrible place, without the aid of scientific equipment, surrounded by deadly dangers, with an unful-hiled mission and the dire necessity of making an escape he had just declared impossible!