The episode begins with the Scout Regiment, led by Commander Erwin Smith, preparing for a final push against the Titans that have infiltrated the city. Eren, Mikasa, and Armin are part of the team that will be leading the charge, and they are determined to reclaim the city from the monstrous creatures.

Attack on Titan Season 3 Episode 3: The Battle for Trost Continues**

The episode also introduces a new character, a young girl named Historia, who is revealed to be the true heir to the throne of the kingdom. Her presence adds a new layer of complexity to the story, and raises questions about the future of the world and the role that the Scout Regiment will play in shaping it.