A new trailer for the "Attack on Titan: Part 1" live-action movie proves one thing — Titans are absolutely terrifying. The footage, which is the first one with English subtitles, is long enough to demonstrate how thrilling the upcoming movie will be. 

The three-minute clip shows a horde of flesh-eating Titans as they breach the walls designed to keep them out and the civilization that is confined in it safe. But no matter how impenetrable these concrete barriers were molded, they are no match for starving Titans. 

The two-part live-action film is a retelling of Hajime Isayama's manga series. The said series is so popular that it also inspired an anime series, with its second season now on the way; video games; and a massive, loyal following.  

Part 1 of the live-action adaptation of the bestselling manga follows Eren, along with two of his friends, as he joins the military on a mission to take down the remorseless behemoths that feed on humans — some of which happened to be Eren's loved ones  —  and wreck anything they set foot on.

IGN says that the movie isn't as faithful as the anime series is to its source material. Some changes include Levi being replaced by seven new characters. As seen in the trailer, the movie also cooks up romance between Eren and Mikasa.

A world premiere for the "Attack on Titan: Part 1" live-action film took place at the Egyptian Theater in Los Angeles last July 14. Distributed by Funimation Entertainment, the film is set to be shown in the U.S. this fall.    

The second part of the adaptation titled "Attack on Titan: End of the World" will be shown in Japan on Sept. 15. There is no available detail for its release in the U.S.

As already reported by Christian Today, a three-installment mini-series, which serves as a tie-in to the movies, will stream in dTV on Aug. 15.