Grace (Diana Glenn, The Slap), her boyfriend, Adam (Andy Rodoreda, Cargo) and younger sister, Lee (Maeve Dermody, Beautiful Kate) decides to take a river tour whilst holidaying in Northern Australia.
As they drift into a mangrove swamp their boat is suddenly capsized and Jim disappears. Realising they've been attacked by a crocodile, Adam drags Grace to the safety of a tree whilst Lee clings on top of the overturned boat. Adam and Grace frantically try and manoeuvre Lee and the boat to the tree but it is firmly stuck.
Stranded in the flooded mangrove swamp, the three holiday makers must work out what to do to survive.