The use of Gravion's ultimate attack temporarily halted the threat posed by Zeravire. However, when it suddenly resurfaced, Earth Gult and its trump card, Gravion, were required to defend this world once again. During this time, EFA was planning to develop their own weapons to counteract Zeravire, known as Grand Trooper. As the people of Earth Gult and EFA fought off the Zeravire, they also had to protect their future while confronting their pasts and uncovering the mysteries surrounding this enigmatic threat.