Shingeki no kyojin - ep09

They do a long introduction on why humanity did so poorly defending Trost from the Titans. It seems that the Elite Recon Corp are the strongest force available to humanity but they leave the morning before the Titan attack. This makes the defense critically weaken and ill prepared to defend against the onslaught the the Titans present them with. Although in the explanation on why they were pushed back to the second wall they also explain to a small degree what happen to Eren while he was resting inside the Titan's stomach. The things he saw inside the Titan's belly was a very pictures view of hell, while he sat there watching others die. The through this pain and suffering he decide that the same wasn't going to happen to him. This is when he transform and through this transformation he tears the Titan apart from the inside. Then through the injustice he felt inside the Titan leads him into madness where it leads him on his rampage where he destroyed every Titan he came across until he is found by Mikasa.

Although he wakes surrounded by his fellow soldiers all clearly intending to kill him. That in this dire situation he is trying to figure out how he got here and why they are intending to execute him. It is unfortunate that the on that is trying to determine his fate is the same coward that ran from his post at the base to save his own skin. That through he paranoia he believe that Eren is a Titan that has taken human form. However it seems that Mikasa doesn't care what the truth is a will kill anyone that tries to kill Eren now that she has just gotten him back. While Armin see that they have all been consumed by their fears and they have no intentions of listening to anyone because they have already past judgment on Eren. That it is only when humanity opens fire on the three of them does Eren remember what happened to him and why he was able to become a Titan. That it is something that his father did to him. That in remembering this he recalls what he needs to do to transform, however he is too weak to fully transform but it is enough to protect Mikasa and Armin. Things end with the three of them safe for now but with things far from over.