A long, long, time ago, before America, before Greece, before Egypt, before Stone age, a war had happened on Earth, a terrible war that torn and scarred the life on Earth. Centuries had passed by since the ever-destructive war had ravaged the land and Earth finally recovered from death and destruction. But as the wound slowly smothered away, all record of that war was slowly forgotten, the ancient buildings crumbled, scrolls turned into dust, and paintings on the cave faded and their walls rotted away. Stories of the war which had passed through the generations, suddenly never mentioned again until humans couldn’t even remember the bitter times when forces clashed which were way beyond their grasp. And all of sudden, several giant unidentified flying objects, over 750km in diameter passed over Earth's moon and entered the orbit of the earth. Along with their arrival, all satellite communications were interrupted, technology destroyed, no more social media, no more streaming service. As fear gripped the cities of the world, especially the millennials, and it became clear that a force of incredible magnitude had arrived on Earth. Its mission: UNKNOWN. Meanwhile, Thorn Ketchup, an 18 years old university student was delivering a pizza when he hit a tall green man with a pointy ear and a blue screen suddenly appeared right in front of his faces.