Tracy Beaker is a 10-year-old girl who has been placed in a children's home. Tracy makes new friends along the way and causes mischief wherever she goes.

The world of John Strange is no ordinary place - full of malevolent demons that must be stopped from wreaking havoc upon the Earth. In his quest he is joined by nurse Jude Atkins, computer whiz Toby and Kevin, a man who can pick up on strange vibes. But the mysterious Canon Black remains a thorn in John's side, fervent in his efforts to prove the non-existence of anything remotely demonic or paranormal...