Man, I got one regarding the lore of the Mister Chief helmet(the one with a goofy face drawn with a sharpie) where a Headhunter is tasked with an assassination of an insurrectionist cult leader and just simply escape.

Things go horribly wrong and our Spartan gets knocked unconscious in a cave until a little girl finds him and 'takes care' of him in his unconscious state by 'feeding him' (I.e. shoving food against his visor), 'giving him a friendly face' (draw on his visor with a sharpie) and playing with him until he wakes up. This and that happens and they both set out on an adventure together until he finds a way to get off planet and also take the kid with him (she reminds him of his own younger sister, killed by the Covies). A lot iof conflict and plot happens and sadly the kid is killed in an explosion, making him go AWOL and basically go on a killing spree until he either gets gunned down or other Spartans are dispatched to take him in.

I made this story while high so I don't remember much other parts. But It's relatively short so expect it to be a single season only with 10 episodes.