You were wandering about the alleyways of the underground when you saw people go past using ODM gear. They seemed to be chasing a group of 3 people and when you took a closer look you saw they had the wings of freedom. It was the Survey Corps. You followed them and when you caught up you saw the 3 people in handcuffs on their knees. You witnessed Levi being shoved down into a puddle in front of Erwin by a soldier for not answering his questions. His friends (Isabel and Farlan) shouting at them