While the savage Naor clans prepare to march on the heart of the Allied Realms, Rylin infiltrates the highest of the enemy ranks to learn their secrets and free hundreds of doomed prisoners. His ailing mentor Varama leads the ever-dwindling Altenerai corps in a series of desperate strikes to cripple the Naor occupiers, hoping for a relief force that may not come in time to save what's left of the city and her charges.Elenai, Kyrkenall, and the kobalin Ortok ride through the storm-wracked Shifting Lands to rekindle an alliance with the ko'aye, the only possible counter to the terrible Naor dragons. Even if they survive the hazardous trek deep through kobalin territory to find the winged lizards, though, the three are unlikely to get a warm reception, for the queen of the five realms refused to aid the ko'aye when their homelands were attacked, and the creatures have long memories.While the Altenerai fight impossible odds to save the realms, their queen delves further and deeper into the magic of the mysterious hearthstones in a frantic attempt to unlock secrets that might just destroy them all.