Adrian Crimson and the Sword of Fire

Zeus, the King of the Gods, has perished. And now Olympus is in control of Ares, the God of War, who seeks to start a fully fledged war between Olympus and the Underworld.
Adrian Crimson, the Half-blood son of Zeus whose existence was kept a secret, is now all that stands between Ares and the end of the world.
The only way to stop Ares is to find the Sword of Fire. Will Adrian be able to stop the Apocalypse or... is it going to be the end of everything?