The enemy is at the gates of Ur. Soon, the city will be sacked, and all traces of its history effaced. Time is of the essence: a small group of townsfolk must escape with a few members from the sacred fire, setting out in the mad hope of reaching the mythic Agartha, where the flame of Ur might be rekindled. The perilous journey might take years. Will the haruspices of Tharsis allow them passage? Do spirits still dwell in Lemuria? Does Agartha even exist?