About the book: 2013 / Percy Jackson returns to Camp Half-Blood and, to his horror, discovers that Thalia's magical tree contains the soul of Zeus' daughter , poisoned, but it was his magic that always protected the camp from monsters. Percy has visions from which he learns that to save the camp he must obtain the Golden Fleece. But getting to it is not so easy! It is kept where there is no way back - on the island of the Cyclops Polyphemus in the Sea of ​​Monsters…