<P> Percy Jackson has been having nightmares about Grover Underwood running from an unseen monster and taking refuge in a wedding dress shop . At school, a group of laestrygonians attack Percy and his classmates in a fiery game of dodgeball, but he is saved by his new friend Tyson . Annabeth Chase arrives and takes Percy and Tyson to Camp Half - Blood in the taxi of the Gray Sisters, who give Percy a series of mysterious numbers they call "the location (he seeks)". Percy, Annabeth, and Tyson find the camp under attack by the Colchis bulls, which Tyson is able to defeat because he is in reality a baby cyclops, not a human . They discover that Thalia's tree has been poisoned, severely weakening the camp's magic boundaries . Chiron is suspected of poisoning it because his father is the titan Kronos, and has been fired . </P> <P> Percy tells Annabeth about his dreams, and she deduces that Grover has found the Golden Fleece, which can cure Thalia's poisoned tree, and is located at the coordinates from the Gray Sisters . Tantalus (who replaced Chiron as camp counselor) sends Clarisse La Rue on a quest to find the Golden Fleece . Percy, Annabeth, and Tyson run away from camp to find Grover . They are aided in their escape by the god Hermes, who helps them reach a passing cruise ship, the Princess Andromeda . Once aboard, they discover that the ship is full of tourists in a dream - like state living alongside Greek monsters . They are captured by Luke Castellan and learn that he is trying to revive his master Kronos . They escape on a lifeboat and eventually find one of many hideouts that Luke, Thalia, and Annabeth built as children . They are attacked by a hydra but are saved by Clarisse, who is sailing on a confederate ironclad called the CSS Birmingham . </P> <P> En route to the Sea of Monsters (Bermuda triangle), the Birmingham is destroyed by Charybdis and Scylla . Thinking Tyson and Clarisse dead, Percy and Annabeth sail in a lifeboat to a nearby island, where they narrowly escape the sorceress Circe, who turns men into guinea pigs . They steal the Queen Anne's Revenge from Circe's harbor and sail towards the island of Polyphemus . Along the way, they pass the island of the Sirens and Annabeth confesses her fatal flaw, hubris, to Percy . When they reach the island, they find Grover, Clarisse, Tyson, and the fleece . Tyson and Percy work together to defeat Polyphemus and return the group to the mainland . Once there, Clarisse takes a plane to Camp Half - Blood with the Fleece . The remaining questers are captured by Luke and taken to the Princess Andromeda . Percy manages to contact Camp Half - Blood through an Iris Message and tricks Luke into admitting that he poisoned Thalia's tree, proving Chiron's innocence in front of the entire camp . Mr. D then sends Tantalus back to the Fields of Punishment . Luke duels Percy, beats him, and is about to kill the group, but before he does, Chiron and the his centaur relatives appear and rescue them . Returning to the camp, Chiron is given his job back and the Golden Fleece heals Thalia's tree . However, in the final pages, the Golden Fleece also revives Thalia Grace, putting another half - blood back into play for the Great Prophecy the gods fear so much . </P> <Ul> <Li> Percy Jackson: The son of Poseidon; a 13 - year - old demigod who travels to the island of Polyphemus in the Bermuda Triangle to find Grover and recover the Golden Fleece . He is accompanied by Annabeth and Tyson, his half - brother, on the quest . He is successful in the end; and gives Clarisse the Fleece while he is attacked by Luke on his way to the Camp . However, he and his friends are rescued by Chiron and the Party Ponies . </Li> <Li> Annabeth Chase: The daughter of Athena . A demigod who is 13 years old and a friend of Percy . She accompanies him to the island and helps him in his quest by rescuing Percy from Circe's island . Annabeth is injured by Polyphemus and recovers with the help of the Golden Fleece . She accompanies Percy to Camp after Chiron succeeds in rescuing them from the hands of Luke and the Titan army . </Li> <Li> Grover Underwood: The guard for Percy given by the gods, a satyr who has been captured by Polyphemus during his search for the wild god Pan . Due to his poor eyesight, Polyphemus mistakes Grover for a female Cyclops . He is rescued by his friends Percy and Annabeth . </Li> <Li> Clarisse La Rue: Daughter of Ares who was given the quest of retrieving the Golden Fleece . With the help of Percy and his friends, she is successful in her quest . Percy gives her the Fleece that she takes to Camp Half Blood . Polyphemus wishes to wed her after it is revealed to him that Grover is a male satyr . </Li> <Li> Luke Castellan: The main antagonist, now 20; he works for Kronos . He captures Percy and the rest before being thwarted by Chiron and his brethren, the Party Ponies . </Li> <Li> Tyson the Cyclops: Percy's half brother; he is initially portrayed as a homeless child before Annabeth helps Percy realize that he is a Cyclops . He accompanies Percy and Annabeth in their quest and befriends a hippocampus whom he names Rainbow . He is very big and has one brown eye . When Clarisse's ship explodes, he is presumed dead until it is learned that he survived due to his immunity to fire . </Li> </Ul>

Percy jackson and the sea of monster book