Cosmic Era 78: The Plants and Earth have sustained many years of peace and prosperity. As technology advanced, both sides began to explore the outer regions of space, expecting to find new life forms. At first, they found none. After a few years of exploring, they found a life form much further advanced than they were and had no choice but to flee. Yet, the alien life form followed them back to the Plants and Earth and they set up a base on Mars, destroying the few outposts recently created there. Since then, the Plants and Earth have been fighting a losing battle with the aliens, later named the Hulgar.
Thus, the new space age began in a time of war. The Coordinators, the genetically enhanced human race who built the Plants and now mostly live in space, and the Naturals, the original human race that prefer to remain on Earth, must gather their strength in the uneasy peace and fight the common enemy.
This is Gundam Seed Abyss.
As you read this story, if you have any questions or comment, please feel free to ask or comment on the chapter. If you wish for more to the story, I'll need to see some comments before I add more.