Topic: The Last Olympian - Rick Riordan
This book begins with a big war having a great ending. The Titans have returned from their prison in Tartarus and are waging war on the Gods in modern-day New York City. This magical world is hidden to most mortals, but Percy Jackson isn't just some mortal. Percy and his allies must stop the Titans from destroying Olympus, which is now located on the magical six-hundredth floor of the Empire State building. Will Percy and the rest of the gang stop the Titans from destroying Olympus?