15-year-old Josh fantasises about becoming a death metal guitarist complete with tattoos, piercings and hoards of adoring fans. But it's not easy when his super-strict mum won't let him grow his hair. Josh has a diary with his hopes, dreams and frustrations. What Josh doesn't know is that his mother also kept a diary, back about the time he was born, and a secret in there holds the key to Josh's life becoming a whole lot more metal.