Walt Koontz, a homophobic guy, ends up with paralyzed vocal cords because of an unfortunate stroke. His therapy includes receiving singing lessons from a neighbor who is not only openly flamboyant but also a pre-op transgenderist. Both of them are equally prejudiced; Koontz against homosexuals and the neighbor against close-minded straight people.

Set in Melbourne in the mid-1970s, Cut Snake tells the story of Sparra Farrell (Alex Russell), an ex-convict who is trying to make a new life for himself in a new city. He has found honest work and even becomes engaged but the prospect of this new life is challenged when his foreboding and charismatic cell mate Pommie (Sullivan Stapleton) tracks him down upon his own release. Sparra finds himself enigmatically drawn back toward a world and a man that he was certain he had wanted to leave behind.