The Void Dragons

A year has passed since Proteus vanished after warning of a massive threat headed toward the solar system, and still nothing has appeared. With new riders needed for Phobos and Deimos, record numbers of recruits joining their famous crews, and the once-every-500-years Solar Summit approaching, Lunar Jones and Dread have plenty to keep them busy.

Then Lunar discovers an abandoned ship between Earth and Mars, its crew mysteriously missing. The evidence points to nine terrifying creatures, each headed for a different planet. Soon the entire solar system is battling void dragons - undead enemies that are nearly impossible to destroy.

But the void dragons are only the beginning. A black hole is coming, and to save their world once again, Lunar and the Dread Knights will need new allies, new powers, and the courage to risk everything.