Percy and Annabeth fell into Tartarus, so they cross the underworld to get to the Doors of Death. While they are there, Piper, Hazel, Leo, Jason and Frank are also trying to get to the doors of death on their side, to try and get them out. Piper gets information from a god to follow her path to the Doors of Death. Annabeth and Percy have no food and water and are traveling through the underworld fighting off monsters. They find the Titan Bob and he helps them to the Doors. While that's happening, Leo and his friends have to fight off monsters on their side to reach the Doors. Down in the Underworld, Bob fights off the monsters while he holds the up arrow on the elevator to get Percy and Annebeth up. After they get to the top they give the Romans the statue they found to stop the fighting between the camps.
I rated the book a 4 out of 5 stars because I love Rick Riordan's series. He also went into very good detail about the situations that happened. I also picked to rate it a 4 because I love Greek mythology and would like to learn more about it. Rick Riordan is also one of my favorite authors. Finally, I picked 4 out of 5 stars because I wanted to show that his series is really good and that other people should read his books.
- Zachary W.