The chosen ones have reached the kingdom of Fire, where the fourth and final Key of the Power awaits them. Before they can retrieve the final amulet and complete their mission, though, the Company of Seekers will again be put to the test: this time it is Mayim and Esh who have to find their way through pain, loss and treachery. While the Enemy's plan to destroy the Power emerges from the past, and its threat grows as the chosen ones come closer to the truth, their journey helps them uncover new evidence of the importance of their mission. From the gigantic Baar of Hot Well to the dark Zalyan of Slowfire, new friends contribute to their understanding of the truth, while the extraordinary magic of the Keys begins to reveal itself to support their mission. That same magic, though, could keep the Power out of Yesod for ever. When the Gorge of Flame releases its treasure, the chosen ones will hold the destiny of the four kingdoms in their hands.