Getting your truck bogged deep in the remote waterways of the Cape is terrifying enough, but saltwater crocodiles aren't the only apex predators ruling the muddy banks. When a solo driver attempts to winch his three-ton rig out of a pitch-black creek crossing, something massive and ancient in the depths violently yanks the heavy steel cable straight down. As pale yellow eyes break the surface and a primordial roar shakes the chassis, he quickly realises that some Australian waters are guarded by things that do not want us there.