Pete is an American travel writer reporting on the booming tourist industry in the Northern Territory. While taking a river cruise he finds himself stuck with a collection of interesting characters, including Kate, the beautiful local tour guide. There is an immediate attraction between the two, but when their boat is rammed by something from below, the tour is thrown into disarray and they become stranded on a tiny mud island.
As night falls and the tide starts to rise, the group slowly realise they are being stalked by a huge saltwater crocodile, beginning a terrifying struggle for survival in one of the most remote places in the world.