Hello Fan fiction viewers this is my first fanfic so don't be too harsh in the reviews but if I do something wrong don't hesitate to let me know but remember this is a fan fiction and I plan on making more depending on how this story does, this is a Halo and Fate/Stay Night crossover, this idea has been killing at my head since about a month ago, alright now that thats done R&R

P.s. Don't flame, just tell us NICELY what we did wrong ;D

We don't own Halo or Fate/Stay Night and if we did…well lets just say i wouldn't be here typing this ;P, instead we would be bathing in water and money instead of fighting those spermy/ herpintitus/ testicular monsters…

P.P.s Those spermy/ herpintitus/ testicular monsters are…THE FLOOD

P.P.P.s Shirou is still the moron he always was instead of being balls to the walls awesome like Johnson or that one unnamed character you play as in some awesome unknown video game no one ever knew of

P.P.P.P.s People die when their killed. If you don't believe mwah look it up

P.P.P.P.P.s Leave some fanart of what you think is koolz, i want to see your guyzez artistic abilities.

Chapter 1: Death of a Hero

It was the year 2553 the war with the covenant was reaching its end with death of the prophet of truth, the leader of the covenant, and with the death of Truth, Chief set out to find Cortana. Chief found Cortana aboard the Covenant capital of High Charity but he also found the Gravemind aboard the ship with her. The Gravemind almost forced Cortana into rampancy but she never gave in as she remembered a certain promise from a certain Spartan. Chief retrieved his A.I. companion and destroyed what remained of High Charity along with the flood was not completely destroyed with the destruction of High Charity and tried to form another Gravemind on the Ark. Chief, the Arbiter, and Sgt. Major Avery Johnson assaulted the control room of the Ark aided by 343 Guilty Spark. When Chief tried to force the destruction of the ring, 343 Guilty Spark killed Sgt. Major Avery Johnson one of Chief's only friends. After the destruction of 343 Guilty Spark, Chief and the Arbiter escaped the Ark onboard the 'Forward Unto Dawn' it was then the portal collapsed causing a slipspace and only the Arbiters half of the ship made it through back to earth while the chiefs half drifted away to the unknown.

_Time Skip 4 years_

The year is 2557. The aft section of the 'Forward Unto Dawn' is drifting through space. Cortana is currently suffering through the final stages of A.I rampancy and is trying to focus so she can keep both Master Chief alive and herself from succumbing to the rampancy while the later part proving to be rather difficult due to how far she is in her rampancy. Cortana had been going on with this trend now for several years now already at the last steps of Rampancy having shown signs of Metastability with Cortana arguing with herself.(1)

"Kill him he doesn't deserve to live."

"NO! Stop it Cortana your better than this."

"He left you to die didn't he?"

"Cortana! Stop thinking like that just calm down."

"But why doesn't he have to suffer like us ?"

"Slowly dying with no hope of survival"

"Cortana desperately tried to process a retort but in the first time in her short existence didn't have an answer to a question".

As Cortana was mulling over the Question and how to respond the rampancy swiftley took over her mind which all in all was quite easy since the rampancy had been battering at her for years now and with almost nothing stopping it now it was almost childs play for it to take over but since Cortana was one of the best, if not the best A.I ever created the rampancy was only slightly able to take over.

She unconsciously began shutting off power to all systems of the ship, including the Cryo-Chamber in which Chief was currently in deep Cryo- Sleep. As the power was being shut down Chiefs vitals began to waver and fade as Cortana shut down the power to the ship while also taking down Chiefs Life Support Systems which in turn choked Chief to death due to lack of Oxygen.

Cortana was abruptly brought back to the present by the lights flickering on and off and the overhead Alarm announcing in a female voice "ALL SYSTEMS DISABLED" when Cortana she looked at the Chiefs pod and saw that the pods Life Support System had been shut off and the Chief was dead.

Cortana slowly floated over to Chief with an disbelieving look on her face and touched the outside of his pod and continued to stare at the pod not moving or talking, not even the nagging voice inside her head was saying anything.

When Cortana finally came to the realization of what she did. She wanted to cry and scream about how this wasn't her fault but her A.I. programming did not have such a code for crying, and on the inside she knew that this was her fault and no one else's. As Cortana was trying to put together what had just happened the nagging voice had finally come back.

" Why so sad? Isn't this what you wanted? Revenge for leaving you to die" the voice said gleefully.

As Cortana thought about what the voice had said she began to cry virtual teams while slowly sliding down Chiefs Cryo-Tube in her grief and sadness, she slowly started to lose control and her rampancy quickly took over and she began to think herself to death as her body started to shift to a reddish color she began to fade away slowly from the bottom to her head, but before Cortana was completely overwhelmed by the rampancy she managed to mutter out a few words from her tear stricken face "Im sorry John". The room was then swallowed in complete darkness and the chief was not to be seen for a long time. —

John's nightmare-post death

He woke up not knowing what happened, when he looked around he expected the Cyro-Tube room but what he saw was a blank dusty clearing with nothing around but the bodies of UNSC marines and Covenant that were laying all around him, he took notice of a body that started jolting around on the ground then realized what was happening.

The flood was here and were infecting, he reached for his MA5D assault rifle only to realize it was gone. He checked around him for any weapons he quickly noticed that there were none.

The Spartan grunted as he knew this was going to be a CQC(Close Quarter Combat) battle with the flood which often was suicide against so many flood.

There were suddenly overwhelming numbers of flood infection forms that were taking over dead elites as well as marines bodies.

John had seen many twisted things in war, marines bodies ripped in half, elites decapitating civilians, and children dead in the streets, but nothing compared to the flood mutilating and transforming dead corpses for the purpose of wiping out all sentient life in the galaxy, or in this case him.

John knew the odds of survival were slim to none but he still charged the flood as he was about to kill the first one he noticed his shields were starting to flare up despite not being attacked by any flood yet.

Then all sudden he started to fall through the floor until he was in empty space above a planet then he noticed something…something he hadn't seen in a long time

It was Earth.]"