The Pliocene Epoch's exiled races are caught in a violent struggle for ascendancy. The humans who escaped to the Galactic Milieu are now beset on all sides, as they seek a foothold in this turbulent land. Aiken Drum, now king, has many enemies, but the Firvulag seem set to move first to initiate their long-prophesied Nightfall War. And although recent confrontations have weakened Aiken, any sign of frailty will bring down his kingdom.