Percy Jackson: the betrayed

the once greatest hero of olympus, percy jackson, is completely replaced by the so called hero 'Connor Neil',who takes every thing from percy. With no place to call home and nobody to call a friend percy jackson disappears into the night, never seen again.
one year later a war begins and chaos's greatest army is sent to camp half blood. when a prophecy comes telling them that they must find percy to win the war, the rest of the seven and chaos's army must must team up to find him.