Percy Jackson has been called a murderer by the person he loves: Annabeth. Percy is ordered to leave camp, and meets the Universal Master, Lord Chaos, who happens to be his actual father. Learning that he is Omega, an all powerful Primordial, Percy meets his evil uncle End, faces extreme levels of pain and torture, celebrates with the Heroes of Olympus, and confront Gaia in a battle to the death. Will Percy ever get Annabeth back?

Percy and the rest of the seven are in the middle of the Giant war when suddenly, one by one, they are whisked away to the past. What happens when they meet their past selves, and past enemies? Follow the seven through their journey of romance, humor, danger, and all out chaos.