In an interview with GameTrailers.com, David Jaffe explained his story to God of War III. The first cutscene featured Oceanus in his water form (similar to Poseidon's God from) killing Hermes. Kratos then would fight Zeus in the opening boss fight and kill him. Then a portal opens on Mt. Olympus where the Egyptian and Norse Gods desend from. The Titans and the Greek, Egyptian, and Norse Gods wage a war to determine who would ultimately rule the world. Kratos then discovers the power to teleport back and forth through Norway, Egypt, and Greece. Kratos encounters Stheno and takes her head in a boss fight. Then in another boss fight with the Sphinx, Kratos uses Stheno's head to turn the beast into stone (and that's how we have the Sphinx statue today in Egypt). Kratos then realizes to permanently kill a God is to get their mortals to stop believing in them. Kratos' plan was already in effect because; the Gods were focused on ruling the world and had their minds off their mortals. Thus, the mortal world was under natural disasters. The mortals stopped believing in the Gods, which weakend them. Kratos & the Titans kill off the remaining Gods. Kratos then uses the Blades of Athena to slit his wrists, resulting in another trip to the Underworld where he was reunited with his wife & daughter. The final cutscene showed the Three Wise Men heading to the North Star resulting with the birth of the new religions.