Percy didn't want to have to save the world a third time, (and not even his world) but of course what do the gods care? This time, it's Percy, Annabeth, Leo, Jason, Piper, Thalia, Nico, and Lou shipped off to Britain to boarding school, with a war brewing on the horizon. But not just any boarding school. Hogwarts. With one mission, protect Harry Potter. But dark days are ahead...