巨人がすべてを支配する世界で彼らの餌と化してしまった人類は、巨大な三重の壁を築き、壁外への自由と引き換えに巨人の侵略を防いでいました。 しかし、突如どこからともなく現れた超大型巨人の出現により壁を破壊され、100年間保たれた平穏が崩れ、人類対巨人の絶望の闘いが始まってしまいます。

In this post-apocalytpic sci-fi story, humanity has been devastated by the bizarre, giant humanoids known as the Titans. Little is known about where they came from or why they are bent on consuming mankind. Seemingly unintelligent, they have roamed the world for years, killing everyone they see. For the past century, what's left of man has hidden in a giant, three-walled city. People believe their 50-meter-high walls will protect them from the Titans, but the sudden appearance of an immense Titan is about to change everything.