It reveals her tragic childhood on a farm, her mother's rejection, and the moment her father, Rod Reiss, appeared only for the Military Police to murder her mother in front of her.
Reviewers from Inverse and fan communities generally praise the episode for its world-building, though some noted the sharp change in pacing. Key Strengths
"3: Old Story" is most prominently known as the (Episode 40 overall). This episode is widely reviewed as a pivotal, dialogue-heavy chapter that shifts the series from pure action to deep political intrigue and character backstory. ⚔️ Plot Overview
The episode focuses on the pasts of and Commander Erwin Smith , revealing the "old stories" that motivate their current actions.
“Historia just became so much more important than Eren.” Inverse · 7 years ago
Are you asking about this episode, or were you looking for a review of something else, like the Tracey Marshall book Old Story or the Richard Trythall piano piece Mirage 3: Old Story ?
Viewers expecting high-octane Titan battles may find the episode slow, as it "avoids any and all action" to focus on dialogue.
Shingeki no Kyojin Season 3 - Episode 47 discussion : r/anime