The summary could be:
The speaker is a game theorist who tries to solve the secrets of the upcoming game Five Nights at Freddy's: Sister Location. He analyzes the source code, teaser images, and trailer of the game and connects them to the lore of the previous games and the novel Five Nights at Freddy's: The Silver Eyes. He reveals that the game will feature a robotics company founded by the child-killing purple guy, and that the main animatronic, Baby, might be the sister of the crying child from FNAF 4. He also speculates that the puppet character from FNAF 2 might be related to the new animatronics. He ends by asking his audience to subscribe and vote on their excitement for the game.
Here are some possible facts extracted from the text:
1. The text is a transcript of a video by Game Theory about the secrets of Five Nights at Freddy's Sister Location.
2. The text analyzes the source code, teaser images, and trailer of the game to find clues about the story and characters.
3. The text connects the game to the Five Nights at Freddy's novel Silver Eyes and reveals that Afton Robotics is named after the Purple Guy, who is also a co-founder of Fredbear's Family Diner.
4. The text speculates that the main animatronic of the game, Baby, is related to the Pigtailed Girl from Five Nights at Freddy's 4 and that she might be seeking revenge for her brother's death.
5. The text suggests that Sister Location might be a storage facility, a distribution center, or an experimental institute for the animatronics.
6. The text compares the designs of the new animatronics to the old ones and notices similarities and differences.
7. The text proposes that the Desk Guy from FNAF World is Henry, the other co-founder of Fredbear's and the creator of the animatronics, who killed himself with one of his creations.
8. The text questions the canonicity of the novel and the game and argues that they are separate continuities that share some elements.
9. The text points out some hidden details in the trailer and teaser images, such as reflections, colors, and dialogue.
10. The text ends with a pun on the phrase "sister location" and invites viewers to subscribe and vote on their excitement for the game.