A clash of powerful magical forces sets off the Graygem of Gargath, sending Destina Rosethorn and her companions deeper into the past than she intended—to the age of Huma Dragonsbane and the Third Dragon War. Now, with the Device of Time Journeying shattered, they must find another way back to their own era before the Graygem irrevocably alters history and the Third Dragon War ends in defeat for the forces of good.

Destina Rosethorn—as her name implies—believes herself to be a favored child of destiny. But when her father dies in the War of the Lance, she watches her carefully constructed world come crashing down. She loses not only her beloved father but also the legacy he has left her: the family lands and castle. To save her father, she hatches a bold plan—to go back in time and prevent his death.

The people of Krynn have known war in past ages. Some are still alive who remember the triumph of good at the conclusion of the War of the Lance. Still more remember the devastation of the Chaos War, which ended the Fourth Age of the world. But now a new war is about to begin, more terrible than any have known. This war is one for the very heart and soul of the world itself.

The companions believe they have slain the evil Dragon Highlord Verminaard. They have rescued the refugees from Pax Tharkas and taken them to a valley in the Kharolis mountains.

Ages ago, sorcerers of unmatched power sundered a world into four realms—sky, stone, fire, and water—then vanished. Over time, magicians learned to work spells only in their own realms and forgot the others. Now only the few who have survived the Labyrinth and crossed the Death Gate know of the presence of all four realms—and even they have yet to unravel the mysteries of their severed world. . . .