After breaking through a stronghold of old friends and enemies, Zeke hands down his plan for the Eldians to Eren. But what Eren was plotting with his rumbling powers leaves his brother in the dust, betrayed and alone once more. Now, with some help from Ymir, a parade of massive Titans are roused from their centuries-long slumber, breaking free of the Walls to answer their founder's call. Where the march leads, only Eren knows…

Volume 31 of the Attack On Titan manga series by Hajime Isayama.