Enjoying freedom and prestige after the battle for Skyport Seven, Jeremiah Hawks walks openly in an alien society. The indigenous culture clashes even more with those influenced by the Gospel when a mysterious cult siren's movement explodes on the scene. After the assassination of the Emperor's wife, political turmoil and a new invasion threat make Commander Candle's mission to protect Professor Hawks almost impossible. When the cult produces their own guardian, the Commander is challenged by a foe every bit his equal. As an interstellar conflict of epic proportions continue to spin out of control, a generation of new champions must arise in time to prevent the ascendancy of a pervading evil.