Just as the Self Defense Force receives permission to engage the Heterodyne, foreign planes are detected heading towards Japan, possibly to capture the Heterodyne. Akagi's friend in the Self Defense Force, Ishihara, steals Akagi's access card and takes off in the Dai-Guard Fighter to destroy the Heterodyne and Akagi goes in pursuit. Meanwhile Arisa provides information about a geothermal generator to attract the Heterodyne. Ishihara reveals that he was the pilot who made the mistake and shot down the foreign aircraft...