Robyn breaks out of juvenile detention to see her dying grandfather Ringer, only to discover that he wants her help to escape the hospital and return home to do one last thing.

With Gidge’s help, Robyn uncovers the truth about her father and resolves to go to Coober Pedy to find him, but first she must find a way to get past the police.

With Robert and Maxine hot on their heels, Robyn discovers Gidge has stowed away in the taxi. But when she tries to abandon him in the desert, the taxi becomes bogged in the sand.

Tensions rise for Robyn on her father’s farm and when the detectives finally catch up to her, she is forced into making a mad dash to reunite with Gidge.