In Heinessen (capital planet of the Free Planets Alliance), a memorial for the soldiers who died at the battle of Astarte is held. The warmongering speech of Job Trüniht, the Secretary of Defence, is interrupted by Jessica Edwards, whose fiancé was killed in the battle: she asks him why the advocates of war always sacrifice the lives of others while hiding in safer places. While going home, she is attacked by members of the Patriotic Knights Corps (P.K.C.), a nationalistic organization secretly led by Trüniht. She is rescued by her friends Yang and Dusty Attenborough and barely escapes death. The next day, Yang is promoted to rear admiral in command of the newly formed 13th Fleet. His mission: to take the Iserlohn fortress, a powerful space station which has repelled every attack.

Thirty years ago, marquis Klopstock was exiled form the imperial court. He asks prince Braunschweig, the Emperor's son-in-law, to ask forgiveness on his behalf. Braunschweig invites him to his daughter's birthday party. Klopstock's real goal is to bring a bomb in order to kill the Emperor, who will be there. At the party, Reinhard clashes with baron Flegel. The bomb is taken away by accident and makes little damage. Klopstock commits suicide and all the incident is kept secret.