While everyone was doing their own things there was suddenly a golden light appeared and teleported them to a theatre "HELLO EVERYONE FROM DIFFERENT AU AND CROSSOVER, MY NAME IS ZERO AND YOU'LL BE REACTING TO CALE HENITUSE LIFE BEFORE HE GOT TRANSPORTED TO YOUR WORLD" 'WHY ME!!! MY LIFE ISN'T EVEN INTERESTING'

Percy after the war with Gaea he's the only survivor or the seven.