Harvey Denton is just a good payed marketing cinematographer as one day some film material of his dead father is stolen from his flat. A.S.I.O., the australian security agency, begins to overshadow him. Denton realizes that there has to be a connection between his father's film material and the just begun inquiry about British nuclear tests back in the fifties in Australia. Is it true that the aborigines and military personal were intentionally exposed to nuclear radiation? All Denton knows is that his father filmed those tests with governmental commission and died while swimming in the ocean. At least that is the official ground...