One of the country's finest young cellists, 16-year-old Hugh Twycross, has a bright future. A future that has been mapped out by his parents, his teachers, by everybody, it seems, except Hugh Twycross. Hugh has a secret, though: he loves cars and he loves car racing. When his newly discovered grandfather, Poppy, asks him to go on a road trip to Uluru in his 1970 Holden HT Monaro, Hugh decides, for once in his life, to do the unexpected. As they embark on a journey into the vast and fierce landscape of the Australian interior, Hugh discovers that Poppy has a secret that will unravel both their lives and take them in a direction they never expected.