But in the remote Calderon Valley, the boy Tavi struggles with his lack of furycrafting. At fifteen, he has no wind fury to help him fly, no fire fury to light the lamps. Yet as the Alerans' most savage enemy - the Marat horde - returns to the Valley, Tavi's courage and resourcefulness will be a power greater than any fury, one that could turn the tides of war ...

    Under the reign of King Cael the Uniter, this vast cityport on the southern coast has for years been a symbol of strength, maintaining an uneasy peace throughout the Free States. But now a long shadow hangs over the city, in the form of the dread Elharim warlord, Amon Tugha. When his herald infiltrates the city, looking to exploit its dangerous criminal underworld, and a terrible dark magick that has long been buried once again begins to rise, it could be the beginning of the end.

    Those who survive the spire’s trials return home with an attunement: a mark granting the bearer magical powers. According to legend, those few who reach the top of the tower will be granted a boon by the spire’s goddess. He never returned. Now, it’s Corin’s turn. He’s headed to the top floor, on a mission to meet the goddess. If he can survive the trials, Corin will earn an attunement, but that won’t be sufficient to survive the dangers on the upper levels. For that, he’s going to need training, allies, and a lot of ingenuity. The journey won’t be easy, but Corin won’t stop until he gets his brother back.

    But her thoughts are interrupted by the clattering of hooves as a galloping horse bursts from the woods, the rider slumped over his mount's neck, impaled by two black-shafted arrows. As the young man lies dying on the road, he tells Karigan that he is a Green Rider, one of the legendary messengers of the king, and that he bears a "life and death" message for King Zachary. He begs Karigan to carry his message, warning her not to read it, and when she reluctantly agrees, he makes her swear on his sword to complete his mission "for love of country." As he bestows upon her the golden winged-horse brooch which is the symbol of his office, he whispers on his dying breath, "Beware the shadow man..." Karigan's promise changes her life forever. Pursued by unknown assassins, following a path only her horse seems to know, and accompanied by the silent specter of the original messenger, she herself becomes a legendary Green Rider. Caught up in a world of deadly danger and complex magic, compelled by forces she cannot understand, Karigan is hounded by dark beings bent on seeing that the message, and its reluctant carrier, never reach their destination.