巨人に腕と脚を喰いちぎられ、生きたまま飲み込まれてしまったのを最後に、エレンの記憶は途切れます。ところが目を覚ますと、彼の体には傷ひとつなく、周囲の兵士たちは恐れと混乱の入り混じった表情でエレンを取り囲んでいました。自分でも知らなかった“新たな力”を目覚めさせたエレン。巨人を滅ぼすことを誓った少年が、今や自ら巨人となってしまったのです――。

The last thing Eren remembers before blacking out, a Titan had bitten off his arm and leg and was getting ready to eat him alive. Much to his surprise he wakes up without a scratch on him, with a crowd of angry soldiers screaming for his blood. What strange new power has he awakened, and what will happen when the boy devoted to destroying the Titans becomes one himself?