The humanity surrounded by a cage called walls, a 50m wall surrounded them, and protected them from the outer world. But, their imagination drives them crazy, and leads them to a new technology to fly over the wall, called 3dmg. A horror reminder of humanity happened in front of Wall, Maria, one of the walls that surrounded them. A colossal titan appeared! Will humanity do something? Welcome to the world!
Located along the mountain range, Survey Corp MB is the new home for trainees once they enlist in the military, and a regular home for Survey Corp member. The base consists of a mess hall, male and female barracks, showers, and class rooms. A big forest, and a horse track for practice.