Eren Jaeger and his adoptive sister Mikasa Ackermann are living in the border district Shiganshina caged within high walls. This fortress protects the humans against the attacks of human giants so called titans. Behind the walls survey corps act as second defense versus the titans.
As one day the wall gets destroyed by an abnormal titan - the biggest of his kind – a war starts and lots of humans die. The mother of Eren gets eaten by a grinning titan right before her sons eyes. The titan only ate for his joy not for his need and so Eren began to hate the titans and started with the plan to kill every last of them.
So Eren, Armin – his best friend – and Mikasa join the survey corps and arm with maneuver gears. This weapons contain iron-wire container, belts, gas bottles and halfknive-swords to kill titans.
To use the maneuver gear correctly the three friends starting a apprentice ship at the 104. practicetroop of the survey corps. The training isn’t easy at all and death isn’t uncommon in the three years of training. But Eren is stubborn and brave and stand all danger and all titans.
The fight human versus titan begins!