Percy Jackson, son of Poseidon, Annabeth Chase, daughter of Athena, and Thalia Grace, daughter of Zeus, are sent to find two extremely powerful half-bloods in a military school. While trying to escort them to Camp Half-Blood, a manticore appears and ruins their plans. The iconic Hunters of Artemis come to their rescue, and the older of the two half-bloods, Bianca, decides to join them. While Kronos' army starts to build, a new prophecy arises. One that stated that the moon goddess, Artemis, is in danger, both campers and Hunters must unite. I feel that this, out of all five books, was the best. It stands out on its own. It really has depth to it, and I almost cried once or twice. But Percy, Annabeth, and Thalia have to get through it, otherwise the planet will be destroyed. New characters rise and fall, and the whole book is one big roller-coaster ride. This fantasy-mystery book will keep everyone hooked, even the mysterious General.