Story

Story

Halo: Campaign Evolved story and lore — Master Chief, Cortana, Installation 04, Operation METEORITE, and the Halo ringworld mystery explained.

2552
Story Year
10+
Key Characters
3
Prequel Acts

Introduction

The Halo: Campaign Evolved story covers the events of Halo: Combat Evolved in 2552 plus the new Operation METEORITE prequel set one year earlier. Master Chief, Cortana, Sgt. Johnson, and Captain Keyes face the Covenant, the Flood, and the Forerunner truth on Installation 04. The remake preserves the iconic original narrative while weaving in the new Operation METEORITE chapter by Troy Denning, which follows Master Chief and Sgt. Johnson aboard a Covenant research ship investigating Forerunner relics. This story wiki covers every main character, every faction, every key plot beat, and the context that connects Halo: Combat Evolved to the wider Halo universe — from the fall of Reach to the discovery of the Halo Array's true purpose. We also explain the new lore added by Operation METEORITE, the redesigned terminals, and the audio logs you can find across all 13 missions.

Story & Lore Overview

ActYearKey CharactersKey Events
METEORITE Prequel2551Chief, Sgt. JohnsonCovenant research ship discovery
Crash Landing2552Chief, CortanaPillar of Autumn crash
Rescue Operations2552Chief, Captain KeyesTruth and Reconciliation
Map Room Discovery2552Chief, CortanaSilent Cartographer
Control Room Capture2552Chief, MarinesAssault on Control Room
Flood Outbreak2552Chief, Guilty Spark343 Guilty Spark
Library2552Chief, MarinesIndex retrieval
Two Betrayals2552Chief, CortanaEscape Halo
Keyes Rescue2552Chief, CortanaCaptain Keyes recovered
The Maw2552Chief, CortanaDestroy Pillar of Autumn

Story Acts

A

METEORITE Prequel

New

2551: Chief and Johnson investigate Covenant research ship.

Year2551
CharactersChief, Johnson
Missions3
S

Crash Landing

2552: Pillar of Autumn crash-lands on Installation 04.

Year2552
CharactersChief, Cortana
Missions2
A

Rescue Operations

Chief rescues Captain Keyes from Truth and Reconciliation.

Year2552
CharactersChief, Keyes
Missions2
A

Map Room Discovery

Chief finds the Silent Cartographer map room.

Year2552
CharactersChief, Cortana
Missions1
A

Control Room Capture

Chief assaults the Control Room to close the ring.

Year2552
CharactersChief, Marines
Missions1
S

Flood Outbreak

Hard

Chief discovers the Flood and Guilty Spark.

Year2552
CharactersChief, 343 GS
Missions1
S

The Maw

Final mission: Cortana's choice, Pillar of Autumn destruction.

Year2552
CharactersChief, Cortana
Missions1

Core Mechanics

The campaign follows Halo's classic linear narrative structure — each mission advances a single plot thread, with optional lore terminals and audio logs that expand the world. The remake adds 12 new audio logs and 5 new terminals that reveal the Operation METEORITE backstory.

Advantages

The Operation METEORITE prequel adds 3 hours of new story content featuring Master Chief and Sgt. Johnson. The remake also expands the original Halo: CE narrative with deeper character development, new Cortana monologues, and the first canonical encounter between the UNSC and Covenant Forerunner researchers.

Challenges

Original 2001 voice acting is dated — the remake adds new lines but keeps the iconic performances. Some plot threads (Keyes' fate) are unchanged from the original. The METEORITE story is a prequel, so it does not affect the main Halo: CE ending.

Frequently Asked Questions

What is Operation METEORITE?+
Operation METEORITE is a 3-mission prequel chapter set in 2551, one year before the main Halo: CE campaign. Master Chief and Sgt. Johnson investigate a Covenant research ship carrying Forerunner artifacts.
Who wrote the Operation METEORITE story?+
Troy Denning, the New York Times bestselling Halo author (Halo: Last Light, Halo: Retribution), wrote the METEORITE prequel story.
Does the story connect to other Halo games?+
Yes — METEORITE establishes characters and events that connect to Halo 2, Halo 3, and the Forerunner Saga trilogy. The prequel is canonical within the Halo universe.
Is the original Halo: CE ending changed?+
No — the ending of Halo: Combat Evolved (Cortana's choice, the Pillar of Autumn destroyed) is preserved exactly. The remake only adds the prequel content.

Quick Tips

💡

Listen to every Cortana monologue — they reveal deeper lore about the Forerunners.

💡

Operation METEORITE establishes the Covenant's first Forerunner contact — a canonical prequel.

💡

The 12 new audio logs are hidden in secret areas — exploration rewards lore hunters.

💡

Captain Keyes' fate is preserved from the original — the remake does not change the canon.

💡

Troy Denning's METEORITE story is canon in the Halo universe — confirmed by 343i writers.

Explore More