When the earth becomes the hunting ground of cosmic locusts, humans build the last Great Wall with flesh and blood.
Twenty-three years ago, ten meteorites penetrated the hearts of the five major countries like divine punishment, a 20-kilometer giant ship descended on Africa, and a million clone soldiers carried human weapons to crush civilization. In order to survive, the Earth's United Nations UNT gathered its remnant troops and set up the Icarus Line of Defense between the sea of sand and ruins - this fragile defense line woven with old fighter planes, rusty guns and pilot skeletons, is the last arrogance of mankind.
