倒したはずのイルーゴが複数体出現。防衛隊が調査を進めていると、地下からアースガロンをも凌駕する巨大な怪獣が現れる。
エミは、父の研究仲間の西崎と接触。3年前の爆発事故の詳細について真実を告げられる。単独向かった第66実験施設でエミが見たものとは…
Multiple Irugos, which were thought to have been defeated, re-surface once again. As the GGF continues to investigate, a kaiju larger than Earth Garon emerges. Emi comes into contact with her father's former teammate, Nishizaki. Nishizaki reveils the truth about the explosion from three years ago, before Emi heads down to the Test Facility 66 alone. What will she find out?
