From the hit HALO video game series comes a covert mission on a distant planet that puts the whole of human history at stake. Sent on a covert mission, without the rest of her team, Spartan Linda-058's skills in infiltration and marksmanship are called upon to end the threat posed by a wanted scientist on a distant planet. With only an ONI AI at her side, Linda must fight through both the dregs of the Covenant and the hostility of a lost human settlement to stop the rogue scientist in his tracks.