The year is 2552.

The UNSC frigate Stormbreaker carries the newly forged Task Force Centurion, a desperate union of Spartans, ODSTs, and Marines, backed by ONI’s shadow operatives. Their mission: hold the line on Reach after the Covenant’s Devoted Sentries annihilate Sentinel Team.

But high above the embattled world, the Covenant cruiser Twilight Charity begins its purge—glassing cities, scouring battlefields, and hunting for Forerunner relics buried deep beneath the planet’s crust. To claim them, it unleashes its most fanatical warriors: the Vigilant Shroud, masters of stealth and assassination, and the Auric Templars, zealots sworn to guard the Covenant’s faith with blood and fire.

On Reach, survival is no longer enough. The war for the planet’s very soul has begun.