find me, percy jackson

Percy Jackson goes on a search to find his long lost sister, Sarah. Annabeth and Percy have tracked down Sarah and are trying to convince her to go to camp half-blood. when she sudentlly remembers her past life with Percy Jackson. Then her life takes another unexpected turn. The gods are turning against there children 1 by 1. when it's Posidion's turn to disown his children they run for the woods, only to find the one and only Chaos, creater of the universe.