The Sea of Monsters

More about the book

"A magical tree protecting the borders of Camp Half-Blood is poisoned. Thirteen-year-old Percy Jackson, Annabeth Chase, and their new friend Tyson set out to find the one item that can save the camp. The trio must survive cyclopses, man-eating sheep, sirens, and giant cannibals for Camp Half-Blood to have any chance at a future." -- Publisher's website