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...

As the various teams try to make their way to Annex 1, Team 5, made up of Germans and South Americans, comes under ferocious attack by the Terraformars. The team leader, Adolf, struggles to survive against all odds. The American and Japanese members of Team 1 have their own battles to fight against an enemy that keeps coming, keeps adapting and won't stop until all the humans are dead!