Percy Jackson a normal guy who struggles in school finds out that he is a demigod. He is the son of Posiedon, king of the seas. Another god accuses him of a crime that he didn't do, and Percy and his friends go on an adventure to correct past mistake. This is a very good book, it is on my all-time favorites.
This is one of my favorite books. This is Harry Potter's fourth year at Hogwarts. Three schools- Durmstrang, Beaubaxtons, and Hogwarts decide to come together to compete in the Triwizard Tournament. There is a champion at each school, but for some reason the Goblet of Fire chooses an extra champion for Hogwarts- Harry Potter.