Grace, her boyfriend Adam and her younger sister Lee are on holiday in Northern Australia and decide to take a river tour with Jim, their guide. As they drift into a mangrove swamp, their boat is suddenly capsized and Jim disappears. Realizing they've been attacked by a crocodile, Adam drags Grace to the safety of a tree whilst Lee clings to the top of the overturned boat. Stranded in the flooded...

Grace, her boyfriend Adam and her younger sister Lee are on holiday in Northern Australia and decide to take a river tour with Jim, their guide. As they drift into a mangrove swamp, their boat is suddenly capsized and Jim disappears. Realizing they've been attacked by a crocodile, Adam drags Grace to the safety of a tree whilst Lee clings to the top of the overturned boat. Stranded in the flooded mangrove swamp, the three holiday makers must work out what to do to survive being killed by a man-eating crocodile.