The Ades Federation's 3rd and 4th Fleets advance on the key strategic land of Boreas. A decisive, multi-fleet battle over Augusta Sara ensues. Millia takes command of her fleet, while Fam and the Sky Pirates take to the air in armed Vespas.
Much to Fam and friends' elation, Turan and Anatoray form an alliance with Millia and Vincent acting as delegates. Suddenly the Impetus, an Ades Federation flagship, appears... along with Luscinia and Liliana.
To help Millia rebuild Turan, Fam decides to steal a legendary ghost ship known as Sylvius the Reaper, a ship that is said to have single-handedly destroyed an entire Ades Federation fleet. With so few details to work with, though, it won't be easy.
Princess Liliana is sent to Iglasia with instructions for defending the royal city from the Federation assault. Meanwhile, Princess Millia readies a surprise attack of her own, but little does she know Luscinia has a trick up his sleeve too...
In the skies above the sacred Grand Lake, the Ades Federation declares war on the kingdom of Turan. Just when the Turan flagship's destruction seems inevitable, a Sky Pirate named Fam boldly states, "I've made up my mind! I'm going to steal that ship!"