The Phillet Company, determined to complete the final stage of the Demon Sword Project, has taken Elfiné prisoner. Riselia and the others attempt a desperate rescue, but it may already be too late… Meanwhile, Leonis faces the Lord of Beasts, and danger finds its way to the once-safe halls of Excalibur Academy. As the eighteenth platoon works to free Elfiné, Leonis must make a difficult decision.