Five years after the previous volume, a new enemy of the Nobility has arisen. The hero Sunhawk, after rampaging across the Frontier, has finally invaded Greylancer's Northern Frontier Sector. However a mysterious disease has claimed the lives of several Nobles who have fed on human blood, and the fearful Nobility has ordered Greylancer to infiltrate a free land known as the Twilight Zone in order to discover its source. Awaiting him are the malevolent OSB and a rebel Noble, along with the assassin's who have joined him. Meanwhile, a conspiracy to place the entire Frontier under the sole rule of the Capital is revealed, and a noble begins to slaughter humans with toxic blood. The chaos leads Greylancer to the Nobility's Grand Ball, lance in hand. What will become of Sunhawk, and what will come of the incident?