Earth was left behind due to many human actions that eventually exhausted all-natural resources. Thousands of years later, Humanity returned to its home planet to colonize it. The Vanguard was called by Humanity's commanders to start a colonization mission. You play as Sollum, one of the Vanguard soldiers, who eventually woke from a cryogenic sleep without memories of what happened during the colonization process. Your objectives are simple: defend the Volcan Towers, survive the Ganthar sieges to your base, and recall your past events by exploring the dangerous Waipoua forest.