Plot

After being awoken from cryogenic sleep, Master Chief crash lands on a planet infested by aliens known as Prometheans.

Halo 4 is the start of a new saga in the Master Chief's story. This saga is known as the Reclaimer Saga. At the end of the legendary mode of Halo 3 we see Master Chief Petty Officer John-117 orbiting a planet and hear him say to Cortana "Wake me when you need me". Well now is the time to be needed. The game starts where you last left off in a torn in half ship orbiting a planet around four years after the events of Halo 3. John wakes up to Cortana screaming "John I need you!" This creates the beginning of a new saga. In Halo 4 we see a new breed of enemies called the Prometheans. The Prometheans are AIs created by the Forerunners to protect a planet. Unfortunately you're seen as a threat. However despite being made by the Forerunners the Prometheans have a much darker and more sinister plot. Also aside from the Prometheans, Cortana is turning rampant and has begun to turn on the Master Chief. As a new twist, the Master Chief will be working together with the Spartan IV's the replacements to the Master Chief.—Jason Cleary

4 years after the destruction of the final Halo and the ending of the Covenant, Master Chief is woken by Cortana. The war is over, he Covenant has been reformed, and there are new Spartans. The Covenant boards the ship, and Master Chief is forced to retreat. He crashes on a new planet populated by a new race of warriors- the Forerunners. Now, these surviving Forerunner Machines and the Covenant begin attacking the UNSC, and the Master Chief is forced to do his job- leading the UNSC's forces against these new enemies. History and secrets will be revealed, another new enemy will come to light, and the Chief will do his best to save humanity, again.—romanwarrior2

cortana dies