The Void Dragons

A threat is approaching. Something big...
But when a year goes by with no attack, Lunar Jones is forced to focus on preparing with Dread for the Solar Summit - a meeting between the planetary dragons that happens once every five hundred years. He's so busy he almost flies right by the first clue.

A derelict ship between Earth and Mars. A missing crew - and the evidence points to an attack by nine creatures, one for each of the nine planets.

Soon, the entire solar system is locked in battle with creatures called void dragons, an undead enemy proving difficult to destroy. If Lunar and the Dread Knights want to save their world a third time, they'll have to forge new alliances, summon new powers, and be willing to sacrifice everything.