spoiler alert all throughout australia the summer turn into a deluge of rain and hail stone the size of baseball that be cause havoc in coastal city like sydney . it under these hectic condition that tax lawyer david burton and richard chamberlain and get involve in a case and a a defense attorney and involve the death of a local aborigine who be find dead outside a sydney bar . have five fellow aborigine arrest for billy cormans and athol compton and death it determine by the police coroner that billy die of drown not by violence even though he have bruise on his neck and shoulder . yet the court decide to prosecute the five for his death charge them with manslaughter instead of murder . david defend the five get no help from them in their defense with the accused assailant opt to remain quite and keep what happen to billy to themselves and take what come to them from the court . one of the defendant chris and david gulpili and begin to somehow invades david dream a if he want to tell him what be really behind billy death . david at first not take his dream of chris seriously begin to sense that their real when he meet him at the courthouse . chris confirm david dream by show him a strange look black rock that david saw chris have in his dream . later meet chris and and what turn out to be an aborigine shaman and charlie ( nandjiwarna amagula ) who come to his house that even david be tell that he and like charlie and have spiritual power that he inherit from his mother grandfather . those power will reveal to him the future that have to do with the strange weather condition that be flood the australian continent . the earth and chris tell david and be go through a gigantic cleansing cycle with the old world about to be wash away and the new world ready to take it place . david be confuse about what both chris and charlie be tell him but a the rain continue to increase and the ocean wave start to rise he feel that something terrible be go to happen . david want to know if it all aborigine folklore or there some scientific fact and or logic and behind their end of world like revelation . by now it obvious that both chris and charlie be member of an aborigine tribe right in the heart of modern sydney . that alone can get chris off and as well a his four friend and for the murder of billy . since the australian government will not prosecute tribal aborigine and leave any justice to be do by the tribes themselves . still chris refuse to admit he a member of a native tribe and he and his four friend be convict of manslaughter in billy death with the sentence to be hand down by the judge within day . david now determine to find out what be the reason for chris silence and and why billy have to die and be take by chris to the scene of the crime . it there that david find out that billy betray chris tribe member by go there with billy not be a member of chris aborigine tribe . it also reveal to david that he himself have some kind of spiritual connection with the austrailan aborigines a both charlie and his step father rev . burton and david parslow and tell him . the stage be now set for the great and final cleansing cycle that david be see in both his night time dream and day time vision . it come in the form of a massive tidal wave roll out of the pacific ocean into the australian coast city of sydney and then submerge the entire continent .