Spartan Jerome and Red Team investigate the source of a UNSC emergency signal.
The UNSC Spirit of Fire has arrived over an unknown installation after 28 years adrift. Serina, the ship's former AI, had run an AI's lifespan and had taken care of final dispensation. One silver lining, a UNSC distress beacon was received from the surface. Without an AI, the source would have to be located. Red Team, dispatched to find the beacon, come across an abandoned research base. Within they find Isabel, a new AI, and the deadly Atriox. An ensuing fight leaves Douglas-042 injured, and everyone on the run as Banished forces hunt them down. Alice-130 stays down on the surface as she covers Red Team's escape over a Light bridge.
- The scene where Red Team and Atriox fight was modified and used in the Halo Wars 2 Announce Teaser.