The 'Rynosseros Cycle' is set in a far future Australia where great sandships ("charvolants") roam the outback, and the Ab'O tribes control hi-tech and set protocols which restrict the movements of the "Nationals" (white people). In this future Australia, high technology and mysticism co-exist, and piracy and an intricate social order breed a new kind of hero. Tom Tyson, an Everyman figure who has echoes of the Fool of the Tarot, Tom O'Bedlam, the Green Man and other mythic figures, has emerged amnesiac from an Ab'O punishment place known as the Madhouse, with three images that may provide the key to his identity – a Ship, a Star and a woman's Face. Tyson becomes one of the "Coloured Captains" – seven Nationals permitted by the Ab'O to cross the landscape – and wins his ship "Rynosseros" in a lottery, thereafter becoming known as "Blue Tyson". To quote Van Ikin, "In this future Australia, the coastal cities, home of white Australians, are urbanely cosmopolitan centres of culture, while in the interior, around an inland sea, the Ab'O states represent the emancipation of the Aboriginal race whose heritage is both its past and its future destiny. Ab'O Princes use satellites to spy on tribal conflicts, and graceful wind-propelled sand-ships roll across the deserts, giving series its symbol of freedom and inquiry." Dowling has attributed part of the inspiration for the Tom Tyson character to Blue Tyson, a character from one of his high school story fragments, and to the song lyric "Loving Mad Tom" (also known as Tom o'Bedlam), which was drawn to his attention by sf fan and co-founder of Norstrilia Press, Carey Handfield in 1982.