Geoterra

Geoterra is a planet much like Earth.  It was settled by immigrants from Earth who were trying to escape the chaos of the outpost that earth had become.  Unfortunately, the original mission to settle the planet, was infiltrated by a sub-culture that had it's own plan for their new home.  Years of war between the sub-culture and the settlers, resulted in the sub-culture being forced off-world.  With the conflict behind them, the settlers did their best to erase their history and provide their children with the fresh start that they had wanted for themselves.  Unfortunately the sub-culture was not finished, and many generations later, has returned to reclaim what they believe is rightfully theirs.