Halo 2 juoni

Oot hyvä enkus :D

Halo 2 opens following two juxtaposed ceremonies. The Master Chief is being awarded at the Cairo station orbiting Earth while the former leader of the Covenant fleet is being judged and tortured for his crimes. Both for the same event: the destruction of the Halo in the original Halo: Combat Evolved game. These rings are sacrosanct to the Covenant, but presented a great galactic threat, notably The Flood and the rings' ability to destroy all sentient life in the Galaxy. Their prophesied discovery signals the beginning of what they call the "Great Journey". Upon activation of the rings, the Covenant believe their Journey will begin.

The action begins following the Master Chief's ceremony. A Covenant fleet jumps out of slipspace and sends boarding parties towards a battlecluster of stations. These boarding parties carry plasma explosives designed to take out the MAC (Magnetic Accelerator Cannon) guns which threaten the Covenant flagships. The Master Chief finds and disarms the bomb located on the Cairo with the help of Cortana. The pair joins In Amber Clad and heads to earth where the Covenant are attacking the city of New Mombasa. The UNSC Marines successfully repel the invaders with the help of Master Chief. Upon fleeing, the remaining Covenant carrier jumps to a new ring world (in the process, destroying New Mombasa), Installation-05, dubbed "Delta Halo", with In Amber Clad and the Chief in pursuit. The crew of the vessel land on Delta Halo in an attempt to discover the reason for the Covenant's incursion. In Amber Clad's crew learn more of the Halo's significance to The Covenant in the process. Finally, in order to disrupt the Covenant leadership, the Master Chief kills the leader of the Covenant fleet, the High Prophet of Regret.

The action switches to the condemned Covenant fleet commander assuming the role of the Arbiter. His first mission, to silence a heretic who doubts the Prophets' teachings, starts him on a path which ultimately has him doubting his beliefs. Seeds are further sown for discord within the Covenant when the Prophet Heirarchs decide to grant the Brutes control of the military instead of the traditionally favored Elites after the loss of the original Halo ring. During his missions, The Arbiter realizes the danger that the rings represent: their activation is intended to destroy all sentient life in the Galaxy, in order to cleanse the Galaxy of Flood and their potential hosts.

The Master Chief and the Arbiter meet upon the release of the Flood from Delta Halo. A mysterious Flood creature called the Gravemind sends the Arbiter and Master Chief in separate directions to prevent The High Prophets from activating Delta Halo.

The Master Chief finds himself upon the nearby Covenant Holy City, High Charity, a gargantuan space station, and pursues the remaining Prophets. During his mission, The Chief must battle his way through an erupting Covenant civil war between Brutes and Elites. After capturing the In Amber Clad, the Flood, led by the Gravemind, arrive on the city and begin to consume and infect the populace. The only remaining High Prophet, Truth, escapes on a Forerunner vessel hidden in the core of High Charity. The Master Chief manages to stow away on board while Cortana stays behind in order to detonate the In Amber Clad's engine reactors to destroy Delta Halo and High Charity, stopping Tartarus from activating Halo.

The Game comes to a close as The Arbiter and a force of Elites aided by surviving members of In Amber Clad's crew pursue and kill Tartarus and his Brutes on Delta Halo as he is attempts to activate the Halo System.

After the game credits finish rolling, a scene appears in which Cortana and Gravemind are conversing. This appears to be a teaser for Halo 3.