A possible concise summary is:
This is a summary of the film Attack on Titan Part 2, which is based on a manga and anime series. The film follows Eren, a young man who can transform into a giant creature called a Titan, and his friends Mikasa and Armin, who are part of a military group that fights against the Titans that have invaded their walled city. In this part, Eren is captured by a mysterious Titan who turns out to be Shiki-shima, the leader of a rebel faction that wants to overthrow the government. Shiki-shima tries to convince Eren to join his cause, but Eren refuses and escapes with his friends. They plan to use a missile to seal the hole in the wall that was made by another Titan, who is revealed to be General Kubal, the head of the government. Eren and his friends manage to defeat both Shiki-shima and Kubal, and succeed in their mission. At the end, they see the ocean for the first time and vow to continue their adventure.
Here are the key facts extracted from the text:
1. The text is a summary of the film Attack on Titan part 2, which was released in 2015 and directed by Shinji Higuchi.
2. The film is based on a manga and anime series that depicts a world where humans live inside walls to protect themselves from giant creatures called Titans.
3. The main character is Eren Yeager, who has the ability to transform into a Titan and fight against the enemy Titans.
4. Eren was experimented on by his father, who injected him with a serum that gave him the Titan power, but his parents were killed by the government.
5. Eren was captured by the military and interrogated by General Kubal, who wanted to execute him, but he was saved by his friends Armin and Mikasa, who are also members of the Scout Regiment.
6. They planned to use a missile to close the hole in the wall that was created by a Colossal Titan, which was secretly controlled by Kubal.
7. Eren was kidnapped by another Titan, who turned out to be Shikishima, the leader of a rebel faction that wanted to overthrow the government and expose the truth about the Titans.
8. Shikishima revealed that the Titans were created by a biological weapon that infected millions of people 100 years ago, and that the government used them to instill fear and obedience in the people.
9. Eren refused to join Shikishima's plan and fought against him and his armored Titan, with the help of his friends and other Scouts.
10. Eren managed to defeat Shikishima and Kubal's Colossal Titan by using a missile and his Titan power, and closed the hole in the wall.
11. Eren and Mikasa saw the ocean for the first time outside the wall, and vowed to continue their adventure.