The Sea Of Monsters by Rick Riordan

The Sea Of Monsters is a fantasy-adventure novel based on Greek mythology written by Rick Riordan published in 2006. The Sea Of Monsters is the second novel in the Percy Jackson & the Olympians series and the sequel to The Lightning Thief. The book The Sea Of Monsters chronicles the adventures of thirteen-year-old demigod Percy Jackson as he and his friends rescue his satyr friend Grover from the Cyclops Polyphemus and save the camp from a Titan's attack by bringing the Golden Fleece to cure Thalia's poisoned pine tree.
Like the previous book, The Lightning Thief, the novel The Sea Of Monsters is of the fantasy genre. Reviewers consider The Sea Of Monsters to be fast-paced, humorous, full of action, and a blend of the themes of acceptance and family love. The story The Sea Of Monsters begins with Percy Jackson having a nightmare about Grover being chased by a cyclops. The nightmare ends with a big voice booming, "MINE!"
It is the last day of school at Meriweather Prep, and Percy's only friend, Tyson, is being teased by bullies, though there are more of them that day than usual. In gym class, the extra bullies reveal themselves as Laistrygonians (cannibal giants) and attack Percy. Annabeth appears to have been following Percy to talk to him about her own nightmares. She helps Percy and Tyson defeat the Laistrygonians, and the three of them return to camp in the Gray Sisters Taxi... (Summary by Wikipedia)