Jake Summers has had a year to get used to the fact that he is the Guardian of the Underworld. But there have been some strange things happening recently. Tsunamis, earthquakes and flash floods and someone or something seems to be watching him. Is it a coincidence, or is a dark force at work? And could the book of light be the only hope to stop it? Join Jake and his friends on a perilous journey through the Underworld, to find the book which has been lost for hundreds of years.

Can he find it? And can it save them before it's too late? One thing is for certain, an ancient evil will stop at nothing to get there first.