The story begins in a world where the remains of humanity live inside three concentric cities, each protected by enormous walls against attacks by Titans, gigantic humanoid beings who devour humans without any apparent reason. It follows the adventures of Eren Jaeger, his friends Mikasa Ackerman and Armin Arlert, whose lives are changed forever after a Colossal Titan breaches the wall of their home town. Vowing revenge and to reclaim the world from the Titans, Eren and his friends join the Scout Regiment, an elite group of soldiers who fight against Titans.
