Percy, Thalia, Annabeth and Grover are heading to Central Park to fight the Titans when they run across a group of unconscious mortals. As you may recall, the god Morpheus put all the mortals in Manhattan to sleep before Kronos' army attacked the city:
The lights of the city were blinking on. I guess they were on automatic timers. The streetlamps in the park glowed, making the lanes and the trees look spooky – like we needed any more spookiness.
Thalia stopped and tensed, like she was catching a scent. “I’ll be back. Need to check the Hunters on the right flank.”
Her bow appeared in her hands and she disappeared into the trees.
We stepped over bodies of sleeping New Yorkers, moving them to safety when we could. We were just coming to a stone bridge on the northern side of the park when we came across a dozen kids, all slumped next to a pretzel stand, like they’d been lined up to buy snacks.
Grover yelped. “Percy . . . look.”