As a creative and loyal fan, I decided to create my own script depicting the struggles of the Forerunner-Flood war. Note that I am not a member of 343i, and this script is entirely unofficial. I’m very glad to share this with the community! Any nonconstructive criticism, flame, and hate will hurt my feelings. I hope you enjoy it, and please add any suggestions!
One last thing:
To find other community created scripts, go here.
With respect,
Another Locust 
HALO: P R O M E T H E U S
PROLOGUE
PART I
Requiem
475e2 (101,032 B.C.E.)
The camera approaches a massive Forerunner tower similar to the spires on the level shutdown. Several Forerunner transport shuttles are flying towards it. Clouds surround the landscape, along with the faint glow of sunrise.
Cut to interior of tower, inside a room with a large window, and a holographic table. Endurance-Of-Will, a female Promethean commander, is discussing a defense proposal to Rise-Of-Gods, her subordinate.
RISE-OF-GODS
We don’t have the resources for this proposal.
ENDURANCE-OF-WILL
Are you suggesting that we leave billions behind? It will only get stronger.
RISE-OF-GODS
Our attempts only postpone the inevitable. The Flood will win. Endurance, there simply is not another way.
ENDURANCE-OF-WILL
Why must you allow your ignorance to blind you? Such atrocities are unacceptable to the Mantle.
RISE-OF-GODS
Do you have a…better solution?
ENDURANCE-OF-WILL
I do…
The camera cuts outside the tower, an artificial star rises above the horizon.
FADE TO BLACK
Once the screen blackens, a description of the setting starts similar to Mass Effect.
In the fall of the Forerunner empire, a hundred thousand years bore the Halo event, an unstoppable menace threatened all life in the galaxy.
In preparations for the inevitable, the Forerunners began constructing an array of 12 Halo rings to purge the galaxy of life. Such an act violated the terms of the mantle that the Forerunners swore to protect, but the stakes were too high.
The Builders, led by the Master Builder Faber, believed that mass extinction was the only way. They were met with fierce opposition by the Prometheans, led by the Ur-Didact. The Prometheans believed that the Flood could be tactically defeated. However, every battle increased the Parasite’s strength. Driven mad by the parasite, the Ur-Didact proposed combating the flood with mechanical infantry, using the composer. This would be his final mistake…
> The Builders, led by the Master Builder Faber, believed that mass extinction was the only way. They were met with fierce opposition by the Prometheans, led by the Ur-Didact. The Prometheans believed that the Flood could be tactically defeated. However, every battle increased the Parasite’s strength. Driven mad by the parasite, the Ur-Didact proposed combating the flood with mechanical infantry, using the composer. <mark>This would be his final mistake…</mark>
Are you suggesting that the Great and Powerful Ur-Didact died in Halo 4? Because that…
CAN’T BE RIGHT!!!
Or are you saying that the Ur-Didact simply will longer make any mistakes, because the Ur-Didact did certainly “misplace” the Composer on Gamma Halo.
Overall this is a great start and you should post a link to your script here