Attack on Titan: The return to Shiganshina

The year is 855 and Archer Garrett has joined the scout regiment in it's final, desperate attempt to push the Titans away from wall Rose and clear a path to Shiganshina district, a path countless Scouts have died to clear in the past and when he is revealed to be a titan shifter, do the scouts finally have a chance to reclaim what rightfully belongs to humanity?