Highway to Hell

After the war against Gaea, Percy is finally able to return home to reunite with his mother after months spent in hell and in conflict with Gaea and her army. However, not is all as it seems. Disaster seems to strike, leaving Percy alone, terrified, and immensely confused. Meanwhile, the barriers around camp begin to weaken once more, allowing the strongest of monsters through, even a few that seem un-Greek. Demons. Finally noticing the demon hoard at Long Island, New York, the Winchesters and their Guardian Angel are on the case. But are they the only ones to notice? How will these two groups react when a third makes an appearance?