Halo: Blood Line #[nn]

In the aftermath of a crash on an unknown planet, four Spartans and the ship’s AI, Iona, struggle to survive amid hostile survivors from a fallen Covenant vessel—until a mysterious Forerunner machine emerges from the ruins, shifting the fragile balance of the battlefield.

In "null," the remnants of Team Black are pulled into a desperate gambit when Hunter Reff and Grunt Black-1 are captured by the Forerunners and brought to Installation 1-4. With the Monitor 6-8-6 Ebullient Prism analyzing them, Black-4 uncovers hidden memories of a past romance with Black-1, while Black-3 must decide whether to risk a fragile alliance with the Covenant to save their comrade.

In "null," Black-3 and Black-4 push forward through the ruins of Installation 1-4 alongside their Covenant allies, but the Monitor’s interference throws their mission into chaos. As Iona’s program begins to unravel, Black-4 is manipulated into turning on Black-2—just as the Monitor unleashes a devastating attack to erase Iona’s influence.

In "null," Iona confronts the ghost of a past she never lived, unraveling a web of betrayal tied to Victor and the mysterious Black-3, whose memories don’t add up. As she battles the rogue AI Ebullient Prism, she uncovers a truth buried beneath layers of false recollection—Victor’s guilt has rewritten history itself, and the real story is far darker than the version he’s been living.

In "null," the surviving members of Team Black confront a fractured past and a desperate present as old wounds reopen and new threats emerge. With Black-1's forgiveness and Black-2's surprising survival, the team must now face Reff's growing delusion and the deadly intervention of a Monitor—leaving them stranded on a hostile planet with a Covenant fleet on the way.