The voyage of the Peggy Sue continues under the command of Captain Billy Ray Vincent. The story resumes a year after the events on the deadly planet Paradise, chronicled in book one, Ghosts of Orion. The Peggy Sue has gone farther away from Earth than any human built ship, “almost one hundred light-years as the crow flies,” as Captain Vincent observed. After stopping to fill up on deuterium at an icy moon circling an unnamed planet of an insignificant remnant of a dead star, the Captain decides to head back to Earth and home.
On they way the pass through Alpha Phoenicis, a binary star system in the constellation of the phoenix. There the receive a signal that could only have come from an artifact of the T'aafhal, the mysterious vanished alien race whose actions thrust humanity onto the galactic stage. They immediately change course for the signal's point of origin—a small planet orbiting a red dwarf that is the companion star to the system's main orange giant. What they don't know is that they are about to find themselves in the midst of an interplanetary invasion, and an ambush by an undetectable Dark Lord ship that strands Mizuki on the planet's surface. A raging battle for succession among the natives is complicated by meddling “daemons” from another planet in the system. The Queen's Daemon is the second book of the T'aafhal Legacy series, the sequel to the popular T'aafhal Inheritance trilogy.