Irish hero Oisin travels to the Land of Youth with Princess Naomh to enjoy its pleasures, but after three years revisits home to find that three hundred years have passed in Erin Shocked, he ignores a warning not to leave the magical chariot conveying him, as a result of which it disappears leaving him trapped. But is there a hidden agenda at work" Why is he sent to Hyperborea. searching for a weapon against Death' What is Death doing in the Land of Youth" This Chronicle raises questions provides answers taking Oisin through danger, sacrifice and transformation, half revealing a secret as the lovers challenge Death in a tale uniting myth with fantasy.
Since much of this book is set in an alternative world, it constitutes a fantasy. However, it is called an alternative mythology because it takes as its starting point a real myth, and adds to that. The story of Oisin's journey to Tyr n'a n'Og, the land of Eternal Youth, in the company of Naomh is one of the great Irish myths. It personifies the quest for physical immortality in much the same way as do stories of the Fountain of Youth, and the Elixir of Life.
What I have done is to cut the story open in the middle, by sending Oisin on a quest to obtain the secret by which Tyr n'a n'Og can be saved, when the land itself is threatened by a personified form of Death. The tale rejoins the original myth with Oisin's return to Ireland, but a different interpretation is put on this part of the myth, and a different agenda proposed for his actions.