In this modern retelling of Sir Arthur Conan Doyle's fantasy action-adventure classic, a commercial airliner crashes deep in the heart of the Amazon. Now, the survivors must face a mysterious and hostile world inhabited by giant scorpions, dragons, and a simian beast that stands ten stories tall.

A maximum-security prison goes into serious lockdown mode when a shape-shifting demon with an insatiable taste for human flesh unleashes its fury on the inmates and guards.