Percy Jackson was once an Assassin, leader of the Creed or sometimes referred to as the Gargareans. And elite group of men opposite of the Amazons. He has lived far longer than the people at Camp Half Blood think and his soul duty is to fight and kill Ares as many times as it takes. When Ares starts WWIII, Percy assembles his assassins, just as he is betrayed by Camp, the very people he fought side by side with. Now it's up for Percy and the Creed to join forces with the Justice League and end the War God's rain of terror before all is lost.