One year after Joram cast himself Beyond, he returns from the mists, his wife Gwendolyn joining him. Ten years have passed for them Beyond. In Thimhallan, Prince Garald of Sharakan prepares for war with Emporer Xavier of Merilon. The battlefield is prepared, but something nameless rages over it, killing indiscriminately members of each side; the people from whom the ancients of Thimhallan fled centuries ago have crossed the Borders into the realm of magic, bringing with them the deadly tools and machines of Technology. Banding together, the people of Thimhallan must combine their magic with the Dark Arts to overcome the other-world intruders and save their world. Meeting at the Temple of the Necromancers, Joram, Saryon, and Gwen must battle both worlds, being betrayed by each -- it seems the only course of action is for Joram to return to the earth what he took from it.
I've re-read the entire trilogy in the span of the past six days, it being difficult to do anything else. Weis and Hickman, with their writing genius, know how to draw a person into a new world and keep them there. While more military in nature than magical, this book and its events conclude the Prophecy that bound them all together, drawing everything to a close in an unexpected way, but is still tinged with hope. Included in this final book is an appendix describing the game of tarok.