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...

In order to protect their crewmates, Akari and Michelle use their abilities and head into battle against the Terraformars, who have evolved unique and terrifying new forms! The enemy's astounding strength forces them into an unexpectedly desperate fight. Meanwhile, the whereabouts of the other teams scattered around Mars become clear, and the battle between humans and the demons they created reaches a new intensity.