Someone clarify halo 4 for me (spoliers?)

Ive played through it twice and am working on my third playthrough, just saw the librarian’s scene again, and decided to actually look into it and had to do googling before it even started to make sense.

So the didact was a forerunner in charge of defending the forerunners and stuff. During the war with the flood, he turned some humans into prometheans to fight off the flood. that didnt work because there was not enough so he went to turn them all into flood. The librarian imprisoned him on Requiem for this, and halo was fired. When MC freed him, he went to catalog humanity again. Why? the flood was (supposedly) destroyed. Also, Why did the librarian imprison the didact? was it because she saw him as violating the mantle? idk.

Basically im trying to figure out what the librarian/most forerunners relationship with humanity is. why is MC the result of a thousand years of planning? i dont get any of that.

Also supposedly the didact hates humanity to begin with-why? why does he hate the species but not the librarian or others? im awfully confused. the cutscene was awfully fragmented.

EDIT: Oh yea, whats the deal with the secrets in MC’s DNA and the evolution of his humanity or something…

-someone who has only played the games.

> Ive played through it twice and am working on my third playthrough, just saw the librarian’s scene again, and decided to actually look into it and had to do googling before it even started to make sense.
>
> So the didact was a forerunner in charge of defending the forerunners and stuff. During the war with the flood, he turned some humans into prometheans to fight off the flood. that didnt work because there was not enough so he went to turn them all into flood.

He used the Composer to create an army to fight the Flood. He used both humans and his fellow Warriors for this. He did not turn anyone into Flood.

> The librarian imprisoned him on Requiem for this, and halo was fired. When MC freed him, he went to catalog humanity again. Why? the flood was (supposedly) destroyed.

The Flood isn’t completely gone, but the Didact wanted to finish what he started. Humanity is a threat in his eyes, so he wanted to finish them off. This would also give him his army to defend the galaxy in the future, considering that all the Forerunners are now gone.

> Also, Why did the librarian imprison the didact? was it because she saw him as violating the mantle? idk.

The Librarian had spent thousands of years making sure Humanity would recover from their war with the Forerunners and rise strong again. The Didact attempted to destroy all of her efforts. He was also mentally unstable after being tortured by a Gravemind. Locking him in Requiem was a way to get him to recover and see the wrong, but that obviously didn’t work out,

> Basically im trying to figure out what the librarian/most forerunners relationship with humanity is. why is MC the result of a thousand years of planning? i dont get any of that.

The Forerunners, primarily the Librarian, chose Humanity as the Reclaimers. As the Forerunners passed after the Halos fired, they would rise in their place as the galaxy’s caretakers.
The Chief was the result of thousands of years of planning, a character the Librarian needed to rise at a certain point to help continue Humanity along the path to the Mantle. She is steering Humanity in a certain direction, and she is a master at planning.

> Also supposedly the didact hates humanity to begin with-why? why does he hate the species but not the librarian or others? im awfully confused. the cutscene was awfully fragmented.

The Humans fought a war with the Forerunners in ancient times, resulting in the death of millions of Forerunners, including all of the Didact’s children. This resulted in a grudge against Humanity, which was fired up and consumed him after being tortured by a Gravemind. Spending 100,000 years sitting in his own insanity didn’t help anything by the time he was released.

> EDIT: Oh yea, whats the deal with the secrets in MC’s DNA and the evolution of his humanity or something…
>
> -someone who has only played the games.

The Forerunners learned how to manipulate genetics. One way the Librarian was influencing Humanity was by subtly altering their genetics to reach a certain goal. Faster, stronger, more intelligent, stuff like that. She had a plan for Humanity’s “evolutionary journey”, and the situation required her to accelerate the Chief’s.

Well, I should leave this open to someone who knows a lot about the Halo Universe, like Andycu5 or somebody, but here’s what I can sort out for you with my current knowledge:

The Prometheans were warrior-servants lead by the Ur-Didact (the baddie in Halo 4) during the Human-Forerunner War (waaaaaaay back a long, long time ago). When the Forerunners encountered the Flood, Prometheans were turned into digital itel thingies (the Knights) by the Composer, to be immune to the Flood.

The Didact also composed humans living on a Halo to make more and have a bigger army of Prometheans.

The Didact was imprisoned on Requiem by the Librarian because he used the Composer on humans. He survived the Halo Array firing, and somewhere along the line, got mind -Yoinked!- by the Gravemind into hating humanity.

Master Chief wasn’t the result of thousands of years of planning, just humans (Recliamers) in general were. The Master Chief happen to stumble across the Librarian (or what was left of her) and she gave him Forerunner steroids or something that made him immune to the Composer.

Yeah, big help, aren’t I?

thanks a bunch for the fantastic explaination.

I guess JSA343 has got you covered.

Watch the Halo CEA terminals. They explain it.

The Didact did not intentionally turn anyone into flood, only into Prometheans. He turned his own allies, as well as some humans, into Prometheans.

The Librarian imprisoned the Didact because he turned humans into Prometheans. She was upset because that went against what they had agreed on, I believe. His initial Promethean warriors (Forerunner volunteers) were not enough to defeat the Flood hence turning humans as well.

The relationship between humanity/Forerunner: A long time ago, when all this happened, humanity was basically just conquerors. They would explore space, find planets, colonize them, and kill anyone in their way. They were pretty much the bad guys, and they went to war with the Forerunners. However, when they destroyed a planet it was actually to defeat the Flood, but the Forerunners didn’t realize that at first which escalated the war between humanity and the Forerunners. The Didact hates humanity because of their warlike nature, the Librarian wanted a more peaceful solution. She bioengineered humans to regress their evolution to make them very primitive. It was after this that the Didact turned some humans into Prometheans, and that is why the Librarian imprisoned him.

As for Chief’s DNA and being planned, I don’t know all the details but the Librarian is a Lifeworker, she can bioengineer and that kind of stuff, so she set events on course for the Master Chief and Cortana to come into existence. I don’t know how.