So it looks as if the Arbiter is training the other spartan ( from the cover art of Halo 5) to hunt down Master Chief. I would think to gain help from him but maybe he is hunting him down for some other reason? I cant wait to see where the story takes us in Halo 5, the master chief collection is coming with a tv series which connects the story of Halo 4 to Halo 5 so hopefully we find out whats going on then.