Percy Jackson at first glance might seem like a normal human at first sight, but don't let that trick you. He's actually a halfblood. Other than the fact that he's a halfblood and the son of Poisedon, it's his last day of seventh grade. What could possibly go wrong? Turns out, a lot could. Percy goes to school with his friend, Tyson. It's normal until Percy gets threatened by Matt Sloan and his group of friends, that seemed bigger today. At gym, they play dodgeball. Sloan is the team captain, and Percy is the other team captain. When they start the game, it's normal until someone throws a ball at Percy so hard that he couldn't believe someone could throw that hard. Suddenly, Matt Sloan's new friends start growing as tall as Tyson, even taller. Percy remembers what Tyson said earlier about them, that they smell funny. Suddenly, Percy knew why. They were monsters. What will happen next? Read to find out. Overall, I thought this book was really good and it made me want to read the next book. I recommend this to people who enjoy the Harry Potter series. I rate this 5/5.