"John Lee is hired to track down a missing research team from the University of Chicago. On a mission to the Amazon to locate a lost tribe, and the mysterious plant that is said to make its members all but immune to disease, the team have not been heard from in weeks. But what Lee finds in the rainforest is more than anyone bargained for – he not only has to battle against the incredible natural dangers of the Amazon, but he is also forced to contend with drugs gangs and their hidden laboratories, and another group who are tracking the research team and the lost tribe for their own nefarious ends."