The narrative follows “Eren,” who now commands the destructive “Titans” as they relentlessly advance, making it seem nearly insurmountable for those in “Marley” to stop this “rumbling.” Perhaps “Armin” and “Mikasa” can devise a method to intervene by uniting their abilities and encouraging humanity to overcome its divisions and cooperate? While serving as the final installment of a larger story, it's presented in a way that’s accessible even if you haven’t been following along, with striking animation depicting themes of betrayal, devotion, and moments of psychological suspense as these artificial-looking creatures endanger humankind, much like lemmings rushing toward a precipice. The film also functions to resolve certain plotlines, occasionally removing characters in ways that evoke strong feelings, and ultimately emphasizes the importance of collaboration and perseverance while showcasing impressive stunts and unique elements. While familiarity with the prior installments would enhance appreciation, production companies are increasingly adept at creating cinema releases that function independently, and this action-packed story manages to convey its message despite its considerable length and some unnecessary filler.

Source on TMDB