Shingeki no Kyojin - ep24

It seems that even with the truth about Annie being revealed it seems that Eren still doesn't want to believe it. That despite all the sacrifice that were made to protect him, and his self-proclaimed hatred for the Titans. He is unwilling to transform, it might be because he feels that he can't beat her or it might be that he can't bring himself to fight a former friend despite everything she has done. Whatever the reason they just can't stand by and do nothing. Now with them being trap in the tunnel with Annie above them, Armin and Mikasa leave to tunnel in hopes of drawing Annie away from Eren. Although such attempts proves to be invain because just as they leave Eren, Annie crush him from above. This leads to Armin to say behind to try and help free Eren while Mikasa helps the others with dealing with Annie.

It seems that Erwin predicted that Eren might have failed at his mission so he prepared a backup plan to trap her. When Annie is capture at first glance it looks like they succeeds but when Major Hanji taunts her how she will not be getting away this time. This throws Annie into a panic and she break free and continues on her attempt to escape the city. While still trapped beneath the ruble, Eren has to face the truth about what Armin Said to him and drag up his original motivation for becoming a soldier to the for front. That he must allow himself to be consumed by his hatred to transform so that they can stand a chance to stop Annie and not have all the sacrifice be in-vain.