The actions of Kratos in his home sector of Olympus cause drastic effects across the entire world of Playstanea. With widespread chaos and destruction, survivors are forced together to decide their fate. Calypso, who has been silently observing, offers them an ultimatum. Invade or perish. The survivors decide to invade a neighboring planet, Exbor, to claim a piece of land for their own. Overwhelmed by the might of the Playstanean warriors, Master Chief and Cortana decide to form a strike team of their own to combat this new threat. What ensues is an epic crossover battle for all fans of gaming, where the two teams battle both to survive and to protect.