Attack on Titan, Several hundred years agone, humans were nearly annihilated by Titans. Titans square measure generally many stories tall, appear to possess no intelligence, devour mortals, and, worst of all, appear to try to do it for pleasure instead of as a food supply. a little proportion of humanity survived by walling themselves in an exceeding town protected by extraordinarily high walls, even taller than the largest Titans. Flash forward to this and also the town has not seen a Titan in over one hundred years. teenaged boy Eren and his foster sister Mikasa witness one thing horrific because the town walls square measure destroyed by a huge Titan that seems out of nothingness. because the smaller Titans flood the town, the 2 youngsters watch in horror as their mother is eaten alive. Eren vows that he can murder each single Titan and take revenge for all of man.