Sandy Harbutt's seminal bikie movie, Stone, packed out drive-ins around the country in the early 1970s with its potent mix of sex, drugs, rock'n'roll and unbridled horsepower... and in the process helped kickstart the Ozploitation explosion. Ken Shorter (Sunday Too Far Away) is Stone, an undercover cop who infiltrates an outlaw motorcycle gang to investigate a series of grisly killings. He is thrown into the world of the Gravediggers alienated Nam Vets who live in a fortress by the sea and have their own law, their own satanic religion, their own bevy of bikie chicks (including Rebecca Gilling, Return To Eden, in her film debut) and a nasty habit of getting into violent and bloody gang battles.