The Zorbados Muge Empire commences their initial attack on Earth and eliminates nearly all of the planet's defensive forces. All that stands in their way is a newly formed special mobile division: the Cyber-Beast Force.
Out at Fortress 17, the CBF encounters a small force manned by an unexpected group of soldiers. As they become acquainted, General Death Gaia arrives in his special fighter to take on the CBF directly.
The CBF is sent to Mexico City to support the local guerrillas, except there's a problem. When they arrive, there are no signs of any conflict whatsoever!
Sara's father, Takeru Yuki, and a Data Officer whom has been assisting the Earth army, Colonel Kayama, have been captured and are being held on the Izu Peninsula. The CBF is sent out on a rescue mission.