Wizards, Demigods, and Magicians crossover: Zeus's Mystery

How I ended up going to Hogwarts is a totally crazy story. Would it surprise you if I said that it all started when Jason fell out of the sky? --Percy Jackson. Harry Potter had to retake an year at Hogwarts, and headmistress McGonagall seemed to have new ideas on how to run the school, one of them being taking excha...