A new swashbuckling epic fantasy series by New York Times bestselling author Margaret Weis and Robert Krammes. The known world floats upon the Breath of God, a thick gas similar to Earth's oceans, with land masses accessible by airship. The largest of these land masses are ruled by the rival empires of Freya and Rosia. Magic is intrinsic to the functioning of these societies, and is even incorporated into their technological devices. But now a crucial scientific discovery has occurred that could destroy the balance of power-and change the empires forever.

In a world where magic is intrinsic to the fabric of everyday life, two kingdoms, centuries-long enemies, have long sought a powerful magical weapon that will win them lasting dominance. But neither realm is ready when they are both attacked by the Bottom-Dwellers, a bitter people whose own land was destroyed, and who now live only to take vengeance on those they blame for a wretched life in the storm-tossed abyss they inhabit. Using contramagic strengthened by blood sacrifice to attack the world above, they threaten to bring down whole cities, or even the island kingdoms themselves. Freya and Rosia are forced to put aside their age-old conflict to defend themselves, or risk losing everything. As the Bottom-Dwellers’ contramagic eats away at the magic of the dragons that helps protect the world above, a former dragon-riding hero gathers a ragtag group to form a new dragon brigade, the one desperate hope of the two kingdoms to defeat the fiends who threaten their world. As the effects of contramagic bring the world ever closer to disaster, the new dragon brigade fight the vengeful adversary. Their high-flying heroics will be to no avail, though, unless they can somehow uncover forbidden knowledge, long hidden by the Church, without which they will never be able to prevent the world's destruction. Margaret Weis and Robert Krammes deliver yet another exciting dragon brigade adventure in Storm Riders.

Margaret Weis and co-author Robert Krammes bring the enthralling Dragon Brigade trilogy to a thrilling conclusion in The Seven Sigil, a sweeping novel of worldwide war and personal redemption. Five hundred years ago, a clan of rebels was banished to the bottom of the enchanted world of Aeronne; ever since, these Bottom Dwellers have sought revenge, and now they are waging all-out war on the rest of humanity. Their deadly "contramagic" beams destroy buildings and attack naval airships, and their demonic drumming brings terrible storms and disrupts the magic of the people and dragons Above. The attack of their full contramagic power will create a magical armageddon. In an effort to prevent further death, Captain Stephano de Guichen leads the Dragon Brigade, taking the fight to the Bottom. But strength of arms alone will not be enough to conquer their foe. As the Bottom Dwellers' blood magic eats away at the world, those Above realize their only possible defense lies in the heretical secrets of contramagic. Loyal priests must decide whether to protect the Church, or risk its destruction in pursuit of the truth. Only the Dragon Brigade can prevent an endless dark age. Their epic battle will test the mettle of those thrown into the breach, and determine the fate of this magical world.