Armed with the potent and temperamental weapon of a Goddess-in-exile, backed by a twice-born woman legend - or is it history? - named Death's Warrior, Master Thief Gem ser Edreth must lead a reluctant generation ship crew and a far too-eager band of aboriginal warriors against a climate-killing dam constructed and defended by the cream of space-going technology. Gem's clever electronic spiders, and the information contained in an old library may be the key to victory over the planet's oppressors, but Gem faces yet another problem: the ancient power residing within the Trident is waking, and it has an agenda of its own.