The Archeos on summer break between their sophomore and junior year at the university join their grandfather a world renowned archeologist as they try to find the City of Z. Over 100 others have tried and none have been heard of since. The expedition their grandfather sets up takes them into dangers far greater than they ever anticipated. They're headed into the Pantanal, the worlds largest wetlands located in Brazil and surrounding countries. It covers more than 70,000 square miles. Not only was it full of dangerous animals, and treacherous waterways with vicious Caiman and man eating Piranha in them, it was home to cannibals and headhunters. The Archeos know they're facing things they may never be able to handle. They have to figure out how to save themselves and the expedition from dangers greater than they can anticipate and set the stage for traveling into the deepest reaches of the Pantanal. What they find staggers their imaginations and leads them into a world they never imagined possible. Join them as they set out to find Z and unlock the ancient mysteries surrounding it.