A group of Australian SAS regiment soldiers are deployed to Vietnam around 1967/8 and encounter the realities of war, from the numbing boredom of camp life and long range patrols, raids and ambushes where nothing happens, to the the terror of enduring mortar barrages from an unseen enemy. Men die and are crippled in combat by firefights and booby traps, soldiers kill and capture the enemy, gather intelligence and retake ground only to cede it again whilst battling against the bureaucracy and obstinacy of the conventional military hierarchy. In the end they return to civilization, forever changed by their experiences but glad to return to the life they once knew.

All Wally Mellish, an ex-convict in 1960s Australia, wants to do is live a quiet life with his girlfriend Beryl. Unfortunately when two police officers come around to disturb this, a misunderstanding quickly becomes out of control, resulting Wally, Beryl and her child being trapped in their house, surrounded by armed police under the impression that Wally is holding everyone hostage. Events quickly spiral into a media circus as, through the siege, Wally – inadvertently – manages to become a symbol for the anti-war movement.