Events have been set in motion and war has come to the desert.Beneath a Desert Moon is the final installment of the Once Upon a Moonbeam trilogy. The elven army and most of the human rebel band have gathered in the Crystal Sands-home of the ogres. The minions of the demon god, Dredwyn, pour through a portal into these lands bent on seizing control, subjugating the ogres, and plundering the crystal mines. If they are successful, they will have the resources to spread their terror at will throughout the universe. While Marzi and the bulk of the alliance forces face off against the rising tide in Crystal Sands, Tovi is sent back to the human realm of Ebon Hills in Caravast. There he will join forces with Jarek and his friends-what remain of the rebel forces and the Priesthood of Aristan-in the inevitable showdown in an attempt to contain and banish the demon god forever.