For three years Percy has feared the Great Prophecy. He and his friends, Annabeth, Grover, and the newly revived Thalia, all train for the day when the Son of Poseidon will decide the fate of the world. But what will happen when a friend from Annabeth and Thalias past reappears? Whatll happen when he brings friends of his own? Rated T for violence and slight swearing, may change.