After the giant war Percy is left alone in the world. He decides to leave camp and goes to London where he meets the goddess Hecate. In London he is asked to teach at a magic school, Hogwarts. Set after the giant war (the giant war didn't end like it did in BoO so there are no spoilers) and after the war against Voldemort.

Portals are one of the most interesting travel agents in the universe. They can get you anywhere, anytime, and anyplace. But for Percy Jackson, falling through a fandom portal was the last thing he needed. After being plucked from camp, Percy finds himself on the run through the universe without friends or a way home. All the while a darker plot begins to unfold- one that threatens to entangled the entire cosmos. Falling through time and portals, Percy is the only one who can save it from disaster. And from the looks of it, he doesn't have a say In the matter. Will he be strong enough to fight when hope seems to be lost? Will he tip the balance of fate and save everyone? Will he ever get back to camp and see Annabeth again? Or will he lose everything? Fall in deep with Percy before it's too late. "This is the BEST crossover fanfic I've ever read." -@Lady_Slash "...you are one of the best authors on Wattpad." -@TheNerdyDemigoddess "Your story is great...the only good multifandom story I could find." -@stephaieruthrybolt "I can't even begin to Describe how well written this is, the plot is simply incredible." -@AwesomeAuthorAlyssa "One of the rare moments I am practically ravenous for the next chapter..." -@Solid-Wisp "I really thought this book was innocent in the beginning...but you have made me stay up till all hours of the night." -@Diamond_Destiny "This story is ruining my life, I LOVE IT" -@NoSuchThingAs_Normal "You are a really great writer and sometimes I forget you are not Rick Riordan." -@DemeterPond "Can I just say that this book is actually better than the original pjo(Percy Jackson Series) and also HOO(Heroes of Olympus Series)... I LOVE THIS BOOK!!!" -@qzwzezrztzyzuzizozp "Thus begins one of the best Percy Jackson fics there ever has been, is, or ever will be." -@Good_Night_Lock

FAIR WARNING: THIS STORY IS REALLY SHITTY, OLD, AND DESTINED TO BE INCOMPLETE FOR ETERNITY. HAVING READ THIS WARNING, DO NOT COMMENT/SEND ME MESSAGES ASKING FOR UPDATES. THANK YOU. THIS HAS BEEN A PSA. What happens when demigods go to Hogwarts? Chaos, secrets, and lies, that's what! The Seven, Nico, and Reyna are part of an exchange program planned by Chiron. Can they hide all their secrets before it's too late? The Golden Trio, Ginny, Neville, and Luna are assigned to guide the Americans around. Can they risk having the exchange students around them? This is a story about how two very different groups of people set aside their differences to defeat a greater enemy- for neither can win while the other is defeated.

Percy Jackson and Harry Potter, two of our most favored heroes, meet in this epic adventure. Chiron and the gods send Percy and his friends to Hogwarts where they teach two new classes, as well as become friends with the Golden Trio. First impressions aren't that great, and trouble arises. Things eventually get solved, but life is never easy for these two groups, so more troubles comes just as quickly. When the second-most-powerful wizard (first, now that Voldemort's gone), Neculai Mullo gets his hands on Percy and puts him under the Imperious Curse, Harry must help the demigods save their beloved leader. After learning of Percy's past Harry becomes afraid of him, wary of him, but most of all, respective of him. He races to help save Percy, but what happens when he is offered an impossible choice? Will he make the right decision? And the most important question of all: Will Percy even survive? THIS WAS WRITTEN AND FINISHED BEFORE HOUSE OF HADES CAME OUT, SO IF SOME INFORMATION IS WRONG, THERE'S YOUR EXPLANATION.

Percy Jackson just won his own war, and now Chiron wants to send him, Annabeth, Nico and Thalia to a wizard school in England? Not to mention it's called Hogwarts. What kind of name for a school is that? Their quest is to protect some guy named Harry Potter, and stay undercover. No one can know he's a demigod. Well, off to Hoggy-Warts. WARNING: I wrote this when I was twelve, and it has lots of hate towards Harry & Ron in the beginning, even though I love those guys. It's not very good, sensible, or developed! Read at the risk of your own disappointment and disapproval!!

Harry Potter is used to being the Hero of his world. He and every other wizard believes he is the destined savior of the world. Now that wizard world knows Voldemort is back Harry is going to need protection. Percy Jackson has finally defeated Gaea and saved the world yet again and thinks things will start to calm down. Unfortunately for him, he is that protection. Except he can't do it alone. He is going to need the help of six certain people. Worlds collide in Demigods at Hogwarts. (Guys I suck at summaries. I swear the book is better.)