Earth has been under attack from an alien secies for decades. Now that the war is over, the planet is in shambles: what remains of both species struggle with each other and the decrepit planet to gather and keep the supplies that they need for survival. Taking advantage of Earth's weakened state, planet Mato sends six of their best warriors to learn about what's left of the wreaked planet and - if it's possible and reasonable- take it over. However, the guardians of Earth on planet EXO - disappointed in their previous falilure - are hell-bent to succeed this time.