The Battle of the Labyrinth

 The Battle of the Labyrinth is the fourth book in Rick Riordan series. It is about when Percy is at a school orientation and a girl Rachel Elizabeth Dare tells him that the cheerleaders are really empousai. When they are outside Annabeth sees him with Rachel and gets mad. When they get to camp Annabeth goes and talks to Clarissa. Percy goes to the arena and sees a heelhound. They are playing capture the flag when Percy and Annabeth go and hid behind a boulder. They  fall under a cave/tunnel when they get out it was already night. Chiron says that they found an entrance to the Labyrinth. Annabeth gets a quest to lead the people through the labyrinth. They meet the goddess Hera who says that the only reason she came to meet them was to grant Annabeth a wish. She asked for a way to navigate the maze. Percy doesn't get what she was saying because she said that he knew the answer. When he figured out what she meant he thought it could be Rachel because she could see through the mist. when they go through one of the way that are in the labyrinth. They end up in a jail cell. when they wonder around they find the hundred handed one. When they leave they find a ranch which Nico is in. Nico ran away from camp after he found out that his sister Bianca De Angelo died.