A horrific, gruesome and utterly terrifying tale about bats with only one thing on their mind - revenge! Deep in the Amazon jungle, members of a scientific expedition are disappearing... Jake fears his dad, a bat biologist, is in danger. Against his father's wishes, he flies to Brazil to join the team, and embarks on his own investigation. High up in the treacherous rainforest canopy, something is waiting for him. Something as ancient as the dinosaurs, but fiercer. Something that wants a gruesome revenge ...