Despite living almost 3000km's apart, Cassidy Simmons and Mia Falnon have been best friends since they were thirteen. They've been through everything together. Bullying, breakups and Cassidy's relentless memories of her Dad's death. So when Cassidy retrieves a message from Mia's Dad's saying that shes gone missing she is determined to find her. With the help of cryptic messages from an unknown messenger, a trail of graffiti tags, a secret twitter account and Cassidy's Ute, Cassidy go's on a road trip to the other side of Australia to find her M.I.A Mia, while dealing with demons of her own.