The Demons of Discord, a Percy Jackson fic

Nico di Angelo, one year after the Giant War, returns to Camp Half-Blood for what he thought would be the last time. However, things soon go awry as he gets caught up in a New Prophecy with two of the most annoying campers he had ever met. As much as he’d like to turn his back, the stakes are simply too high. They have until the night of Halloween to stop the mastermind behind the various monster attacks going around the country. Will they be able to put aside their differences and stop the monsters before the attacks escalate? Nico/OC