Annabeth is able to make Luke come back to his senses, and Percy gives him Annabeth's knife. Luke stabs himself in his mortal spot, his armpit (as he also was invulnerable from bathing in the River Styx) to destroy Kronos and save Mount Olympus, dying heroically. The gods reward Percy and his friends and offer him immortality. He rejects the offer but instead requests the gods to claim all their children and to have cabins for all the gods, including the minor ones. The Curse of the Oracle was bestowed by Hades when Zeus took his wife, and Rachel Elizabeth Dare becomes the next Oracle and recites the next Great Prophecy. The book finishes with Percy and Annabeth becoming an official couple, and ominous clouds looming over Rachel's next Great Prophecy. There are other series after this one called The Heroes of Olympus and The Trials of Apollo.