What is the 3rd Percy Jackson and the Olympians about?

Answer 1

Percy Jackson is two years away from the Great Prophecy, at age 14. Thalia Grace, just returning from being a tree, is weeks, even days, away from being 16. When called upon for help by Grover Underwood to help protect two sibling demigods, they find the Manticore, who takes Annabeth to Kronos and Luke. Setting out on a quest to save her and Artemis, who has also disappeared, Percy Jackson is in despair for his best friend. Soon, after facing many challenges, he and his friends find Annabeth and Artemis on Mount Tam, bearing the weight of the sky. Percy tricks Atlas, the original sky-bearer, to hold the sky once again and they make their way back to camp, losing Zoe Nightshade, Artemis' lieutenant along the way.