The third and final book of the Five Realms trilogy follows two desperate story lines: the epic 4th Realm battle between the animal kingdom and the 5th Realm alliance, and the intrigue in the tunnels of the Orduna Citadel. If Roland and company do not succeed in the former, and Dawn and company do not succeed in the latter, the ancient realm bonds will be shattered, unleashing the immortal Nephilim upon a helpless world.