Based on author David Grann’s nonfiction bestseller, this is the incredible true story of British explorer Percy Fawcett (Charlie Hunnam), who journeys into the Amazon at the dawn of the 20th century and discovers evidence of a previously unknown civilization that may have once inhabited the region. Despite ridicule from the scientific establishment, the determined Fawcett - supported by his devoted wife (Sienna Miller), son (Tom Holland) and aide-de-camp (Robert Pattinson) - returns time and again to his beloved jungle in an attempt to prove his case, culminating in his mysterious disappearance in 1925. A stirring tribute to the exploratory spirit and a conflicted adventurer driven to the verge of obsession.