In the late 26th century, overpopulation on Earth is reaching the breaking point, and humanity must find new frontiers. The terraforming of Mars has taken centuries but is now complete. The colonization of Mars by humanity is an epoch-making event, but an unintended side effect of the terraforming process unleashes a horror no one could ever have imagined...

The Terraformars have infested Japan and the war for Earth is on! The aliens have evolved and so have Earth's warriors, striking back against the invaders in new and powerful ways. As Japanese and American fighters and soldiers face the onslaught, Michelle sets out on a mission to take Shokichi away from General Kai...