What's left of mankind has hidden in a giant, three-walled city, trapped in fear of these bizarre, giant humanoids known as the Titans. Little is known about where they came from or why they are bent on consuming humankind, but the sudden appearance of an enormous Titan is about to change everything... 

Erwin and the Survey Corps desperately mount a rescue operation to take Eren back from the Colossus Titan and Armored Titan. But without the numbers to form up properly outside the walls, how can the humans catch up before they’re all slaughtered? Just whose side is Ymir on? And will Eren ever see his friends again?