The Calrodian kingdom was forged in war, and caught in the grips of a desperate invasion, it may soon fall to the same force. Even the kingdom's famed and feared dragon riders were unable to stop the gunpowder weapons of the invading Amurian tribes, as the numbers of King Calrod the Fourth's elite reptilian fighting force were devastated by repeated defeats. A lone rider named Karl, and his dragon, Lunarathrax, fight a desperate battle to harry the invading forces, as the burdens of surviving the difficult campaign become both logistical and moral.