Sinnissippi Park, in Hopewell, Illinois, has long hidden a mysterious evil, locked away from humankind by powers greater than most could even imagine. But now the malevolent creatures that normally skulk in the shadows of the park grow bolder, and old secrets hint at a violent explosion. The brewing conflict draws John Ross to Hopewell. A Knight of the Word, Ross is plagued by nightmares that tell him someone evil is coming to unleash an ancient horror upon the world.

Logan Tom is doomed to remember the past and determined to rescue the future. Far behind him lies a boyhood cut violently short by his family’s slaughter, when the forces of madness and hate swept our world after decadent excesses led to civilization’s downfall. Somewhere ahead of him rests the only chance to beat back the minions of evil that are systematically killing and enslaving the last remnants of humanity.

In this prequel to The Sword of Shannara, in which many details of the Four Lands' history are revealed, Druids, horrified by the misuse of magic, have eschewed it in favor of science. But Bremen the Druid studies magic, and becomes an outcast on its account. Bremen discovers that an invincible army of trolls are fast conquering all that lay to their south. Before them come the Nazgul-like Skull Bearers, disfigured and transformed Druids who have fallen prey to the dark arts.

Five hundred years have passed since the devastating demon-led war that tore apart the United States, leaving nothing but scorched and poisoned ruins, and nearly exterminating humankind. Those who escaped the carnage and blight were led to sanctuary by the boy savior known as the Hawk—the gypsy morph.

Brave explorers led by the last Druid, Walker Boh, traveled across unknown seas in search of an elusive magic. But now it seems that Walker and his team were lured there for sinister, unforeseen purposes. As the crew aboard the airship Jerle Shannara is being attacked by evil forces, the Druid’s protégé, Bek Rowe, and his companions are being pursued by the mysterious Ilse Witch. Meanwhile, Walker is alone, caught in a dark maze beneath the ruined city of Castledown.