Changing of the Gods (Percy Jackson Fan-Fic)

Nobody ever thought that a god would disappear, or even die. Unfortunately the goddess of fairness in the world, Nemesis, hasn't been seen in over 20 years. Monster attacks have become much more frequent than normal and even the gods are beginning to worry, because without the goddess of fairness, the world will be plunged into utter chaos.
There is hope though. Any female children of the big three can become a god if the council determines that she is the reincarnation of Nemesis. So Thailia, Layna, and Melani are all brought to camp half blood to be tested, to see just who will become Nemesis.