The Giant war is over and Percy Jackson is spent. Finally there's a chance he can be with Annabeth for a while and he eagerly awaits the summer they have planned together. But when Hecate shows up and sends Percy on a new quest, it could be the by far stupidest thing he has ever done. He must be the new teacher at Hogwarts. Harry Potter has been attacked by the Ministry and Dementors. If that wasn't enough he now has a new teacher. But he is like, a 17 year-old kid. Who looks a lot like him. It's Harry's 5th year and he is now a nutter to the wizarding world. So when he sees the kid show up at Number 12 Grimmauld Place, he starts thinking he might actually be mental. The new kid turns out to be a teacher. The teacher of DADA. But Umbridge is still there- as the High Inquisitor. It seems she watches the new teacher-Professor Jackson- a lot more than the others. Something is off about him. And the Golden Trio always tries to find out what.

Percy and Annabeth get sucked into a black hole, sending them back in time into their 12 year old selves.

Percy and the rest of the seven are in the middle of the Giant war when suddenly, one by one, they are whisked away to the past. What happens when they meet their past selves, and past enemies? Follow the seven through their journey of romance, humor, danger, and all out chaos.

Percy is betrayed when Nick Waters, a son of Poseidon and Percy's half brother, comes to camp. Loyalties are tested and enemies are made. Sally abandons him to start a mortal family. Even with the friends he still has, Percy decides to leave the place he is unwanted. He is summoned on Olympus and accused of things he didn't do. Some believe him but most are just eager to get rid of him. But when will they learn, you can't get rid of Percy that easy. He is met with some gods and the creator himself, who gives him a chance to go back in time and relive his life but not as a son of Poseidon but a son of Chaos. What will Percy find in the new timeline? Friendship? Love? But one things for sure, he will definitely have his revenge on those who wronged and shun him. I own nothing except the OCS and plot. PJO belongs to Rick Riordan.

Harry Potter has become the Master of Death. He's discovered the duplicity of those he thought loved him, so he goes back, and this time he's playing by his own rules.

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.