Mythago Wood was acclaimed by readers and critics alike for its vision of a tract of ancient English woodland within which exist all the mythic people, creatures and landscapes of the collective unconscious. At the end of Mythago Wood, one realm remained unexplored - the ultimate realm, the source of all myths. Lavondyss.

Tallis Keeton, sister of Harry Keeton from Mythago Wood, herself journeys into the wood in search of her lost brother. Her adventures lead her towards Lavondyss itself: but it is a region quite unlike anything she could have imagined...