After his hometown is destroyed and is traumatized, young Eren Jaeger vows to cleanse the earth of the giant humanoid Titans that have brought humanity to the brink of extinction.
As the Trost District is reclaimed from the Titans, Eren is taken under the wing of Captain Levi and his squad, who decide to try and teach him to master his mysterious abilities.
After his lunch is eaten by a Titan on the first day of junior high, young Eren Jaeger vows to destroy the human food-stealing creatures with the help of his classmates and hilarity ensues.