The movie takes place in a world where humanity has been on the verge of extinction for over 100 years. The remaining humans live in a walled city, fearing the Titans, giant creatures that roam outside the walls and devour humans without any apparent reason. The story follows Eren Yeager (voiced by Kiyoto Furuya), his adoptive sister Mikasa Ackerman (voiced by Yui Ishikawa), and their friend Armin Arlert (voiced by Daisuke Ono).

The walls that separate the human city from the outside world serve as a metaphor for the barriers that humans construct to protect themselves from the unknown. The movie highlights the limitations and vulnerabilities of these barriers, demonstrating that even the strongest defenses can be breached.

One of the primary themes of "Attack on Titan Part 1" is the struggle for survival in a world where humanity is on the brink of extinction. The movie explores the psychological trauma and emotional distress experienced by the characters as they face the harsh realities of their world.

The movie's action scenes and animation are top-notch, providing an immersive experience for viewers. The film's pacing is well-balanced, with a mix of quiet moments and intense action sequences.

"Attack on Titan Part 1" is a gripping and intense movie that sets the stage for the rest of the series. The film's themes of survival, trauma, and existential dread are well-explored, and the characters are well-developed and complex.

If you enjoy dark fantasy and action movies with complex characters and themes, then "Attack on Titan Part 1" is a great choice. Fans of other anime series, such as "Fullmetal Alchemist" and "Tokyo Ghoul," may also appreciate the movie's themes and style.

The Titans serve as a symbol of the unknown, representing the uncontrollable forces of nature that threaten humanity. They also symbolize the fear of being consumed by something greater than oneself, reflecting the existential dread that pervades the movie.