The Survey Corp treks through the forest under the darkness of a new moon, plotting how to retake the Shinganshina District in order to get to Eren’s basement. They pass by a sleeping titan but manage to walk by it without waking it up. The group arrives at the seemingly empty Shiganshina district and Eren easily blocks the hole in the outer wall with his titan hardening ability. Before the hole in the inner wall can be plugged, Armin senses a trap and suggests there may be outsiders hiding within the walls, planning to ambush the Survey Corps when they least expect it. When the search for the outsiders reveals a hidden cavity in the wall, the trap is set.