dr.gameland

The Spirit of Fire is sent to the ruined planet Harvest to investigate Covenant activity, where Cutter learns that the Covenant has excavated something at the planet's northern pole.When the UNSC's main outpost on Harvest is captured, Cutter orders Forge to retake it. Soon after, Forge scouts the Covenant excavation and discovers that they, under the direction of the Arbiter, have discovered a Forerunner facility. Forge's troops defeat the Covenant forces before they can destroy the installation, and Anders arrives. She determines that the facility is an interstellar map, and recognizes a set of coordinates that points to the human colony of Arcadia.

After repelling a Covenant counterattack on the Forerunner facility, the Spirit of Fire travels to Arcadia, where the Covenant has begun raiding local cities and slaughtering civilians. Forge contacts the local Spartan special forces and assists with the evacuation process. The Covenant builds a giant energy shield to hide the construction of a gigantic Scarab super-weapon, but the UNSC forces use experimental equipment to break through.The Scarab is destroyed, but the Arbiter kidnaps Anders and escapes the planet.

Forge and the Spartans return to the Spirit of Fire and the crew follows Anders' signal to an uncharted planet in another star system.The planet's surface is infested by the parasitic Flood, who attack and assimilate any sentient life they encounter.The Spirit of Fire inadvertently activates a Forerunner docking station and enters the planet's interior. Flood board the ship, and very soon Forerunner Sentinels appear to cleanse the Flood threat and also to destroy all UNSC forces in the process. The crew discovers the planet is actually hollow, with a habitable interior and a miniature sun. The Covenant's plan is to activate a dormant fleet of highly advanced Forerunner starships inside the planet, and use them to obliterate humanity.

While the Forerunner ships are being activated, Anders escapes through a teleportation device and is rescued. Cutter decides to destroy the Forerunner fleet rather than allow the Covenant to use it. Anders formulates a plan to detonate the ship's faster-than-light drive in the planet's sun, as the explosion would cause a supernova. Before they can prepare the reactor, Forge and the Spartans are ambushed by the Arbiter and his Elites. The Spartans dispatch the aliens and Forge kills the Arbiter. The reactor is damaged during the fight, necessitating a manual detonation. Forge volunteers for the suicidal task, telling the Spartans that they will be needed in the coming fight.The Spirit of Fire escapes just as Forge overloads the reactor, destroying the Forerunner fleet. Without its faster-than-light drive, the Spirit of Fire is left drifting in space. The crew enters cryonic sleep for long-term storage as Cutter takes a last look at Forge's empty cryonic tube. If the game is completed on the "Legendary" difficulty mode, Serina wakes Cutter and tells him that "something has happened".(from wikipedia)