The Free Trader starship Lydis is making a run to the Planet Thoth, carrying incense for the great temples of Kartum, when a civil war lands her in a battle of ancient powers and nameless evil with a Forerunner treasure at its heart.The crew seems normal -- until you look closely at two of its members: Krip Vorlund, a man who walks in a body not his own, and his pet, a four-legged beast hiding the mind of Maelen the Moon Singer, a woman whose esper powers can save them all -- or bring them to eternal destruction.Enter once again into the World of Moon of Three Rings, in this sequel.