After three years embedded in the Siege in Sarajevo, Tom returns to Dublin a haunted shell of his former self. His childhood friends Karl and Gus know they re comically unqualified to help him but are determined to see him through the darkness. So they embark on a journey for an unlikely cure, to an experimental Californian PTSD clinic called Restless Souls. But as they try to save Tom from his memories, they must confront their own - of what happened to Gabriel, their fourth childhood friend. And in doing so ask they must ask why their raucously funny teenage souls got stuck in adult prisons - and why life got so damn complicated and sad.