All Maya Galen wanted was a happy family, stifling her inner urges to explore the wider world for the sake of being there for her children. But parenting with her husband, Con, wasn't always easy. Their eldest son, Jamie, broke off all contact some years ago and now Joe, the apple of her eye, has done the same after an argument with his parents about his chosen way of life. Maya and Con are left rattling around 'The Cottages' - their enormous home in a Lincolnshire village, wondering what they did wrong.
When they are called to Australia to identify the body of a young man, Maya is given her son's journal. After a sleepless night she makes the decision to follow in her youngest son's footsteps and become a vagabond, leaving her husband and daughters to return to the UK without her. From now on she needs to rely on her own physical and emotional strength.
Following Joe's hand-drawn maps and journal entries, Maya travels from Australia to Denmark and beyond, meeting many young people like Joe along the way and trying to discover what it means to be alive. As months turn into years she can't bear to go back to the opression of her perfect home. Slowly, she comes to understand that what she is discovering is her most basic human self.
Another family crisis, involving one of her twin daughters, eventually forces Maya to return home. As she treads carefully through the wreckage of her marriage, unfinished business is tied up and the family once again becomes complete, but in a different way from before.