Halo 3: Halo

Now that the master chief has saved Cortana from the gravemind in high charity, the chief, Cortana, and the artbiter crash land on a brand new installation 04. When they arrive at the control room, Johnson has reunited with all 3 and are preparing to fire the unfinished halo ring. When they are going to do so, there is someone who is abruptly stopping them from destroying the new installation 04.