Dirk Pitt finds himself up against a wealthy Chinese businessman who is making a fortune smuggling Chinese immigrants around the world, building a huge shipping port which he intends to flood by diverting the Mississippi and who is searching for a lost treasure ship in the Great Lakes.

Dirk Pitt finds himself up against a wealthy Chinese businessman who is making a fortune smuggling Chinese immigrants around the world, building a huge shipping port which he intends to flood by diverting the Mississippi and who is searching for a lost treasure ship in the Great Lakes.