The Sea of Monsters is the second book in the critically acclaimed, New York Times Bestseller series, Percy Jackson and the Olympians by Rick Riordan. Published in April 2006, The Sea of Monsters is a middle-grade American fantasy novel for readers between eight and thirteen years old. Set in the summer after the events of the first book, The Lightning Thief, The Sea of Monsters follows the adventures of 13-year-old Percy Jackson as he continues to navigate gods and monsters from Greek myth in the modern-day world alongside his friends, Grover, Annabeth, and Tyson.
Percy Jackson is excited to spend the upcoming summer at Camp Half-Blood after a rough summer followed by an uneventual school year. But when he has a dream about his best friend, Grover, being chased by a strange monster, things change fast. After he's attacked by giants during his last day of school, he discovers that Camp Half-Blood is no longer the safe haven it once was. Now, he, his old friend Annabeth Chase, and his new friend, Tyson, must figure out who has poisoned the camp's magical borders. To save the camp—and Grover—they must journey to the mysterious Sea of Monsters.
Widely acclaimed, The Sea of Monsters has been the recipient of multiple awards, including the 2009 Mark Twain Award and the 2009 Young Adult Library Services Association's Best Book for Young Adults. Since its publication, it has had multiple reprints and adaptations, including a film and a graphic novel in the summer of 2013.