A group of five American friends on the cusp of maturity travel to Panama to reconnect and unwind. They befriend a local woman in their hotel pub --and despite several menacing whispers--she brings the Americans on a daytrip into the pristine drops at the nearby jungle and goes against the specific instructions of her brother. After she unexpectedly goes lost what begins as an trip to a waterfall quickly turns terrifying. As night closes in, the friends realize behind the rumors--the mythical, blood-sucking Chupacabra is stalking them.