When Percy, Annabeth, Nico, and Thalia get assigned a quest to protect Harry Potter, they never expected it to be back in time and in a whole different world: a world of magic. In Hogwarts, no one suspects a thing. But what happens when three young wizards find out the truth? Fandom time period: Takes place after the Blood of Olympus but during The Sorcerers Stone. DISCLAIMER: I own NOTHING. Characters, plot, ideas, and lines ALL belong to the wonderful authors Rick Riordan and Joanne Rowling. [Highest rank: 304 in fanfiction]