Percy grapples with his heritage and his complex relationship with Tyson, learning to overcome prejudice.

Along the way, they must also rescue their friend Grover Underwood, who is being held prisoner by the Cyclops Polyphemus.

Percy is joined by Annabeth Chase and his newly discovered half-brother, Tyson, who is a Cyclops.

The group faces the rising threat of the Titan Kronos and the betrayal of former friend Luke Castellan. Key Themes

The story begins with Percy's seventh-grade year ending in a "mythic disaster" after a monster attack at his school. Upon returning to Camp Half-Blood, he discovers that the magical borders protecting the camp have been poisoned. To save the only safe haven for demigods, Percy must venture into the treacherous Sea of Monsters—known to mortals as the —to retrieve the mythical Golden Fleece .

(The Sea of Monsters) is the second installment in Rick Riordan's bestselling Percy Jackson & the Olympians series. Published in 2006, this fantasy-adventure novel continues the journey of 13-year-old demigod Percy Jackson as he navigates the dangers of being a son of Poseidon in the modern world. Plot Overview

The book explores the multifaceted nature of being a hero and the weight of prophecy. Critical Reception The Sea of Monsters: Study Guide - SparkNotes