The Lost Hero (The Heroes of Olympus - Book 1) by Rick Riordan

After saving Olympus from the evil Titan lord, Kronos, Percy and friends have rebuilt their beloved Camp Half-Blood, where the next generation of demigods must now prepare for a chilling prophecy of their own:Seven half-bloods shall answer the call,To storm or fire the world must fall.An oath to keep with a final breath,And foes bear arms to the Doors of Death.From the blockbuster best-selling author Rick Riordan, fans return to the world of Camp Half-Blood. Here, a new group of heroes will inherit a quest. But to survive the journey, they’ll need the help of some familiar demigods. A hardcover copy in excellent condition.