Why, hello incredible sci-fi imagery! Fancy meeting you here. Halo 4 is a serious game for the world of the Halo franchise, and to go with that, it needs awesome art and locations. Check out this gallery of scenes from the story of Halo 4. GameInformer has the story.
Yes, Cortana is in there. So are spaceships, artificial worlds, big damn sci-fi technowidgets, and big names that do not lack for gravitas.
Woot. Cortana. Although she could do with better outfits.