In the second installment of the Percy Jackson and the Olympians Series, Percy is at a new school, again. Percy makes a new friend with Tyson, a giant by normal standards, but in the world on myth it turns out Tyson is not just a giant, but also a Cyclops.
When Percy learns that there is trouble at Camp Half-Blood, he goes there with Tyson. Someone has poisoned the tree that stands above Half-Blood Hill and provides a magical barrier and protection to the camp. With mythological monsters on the loose and Percy’s best friend Grover kidnapped on an island the Camp appears destined to be destroyed; however, Grover sends Percy a message providing a key to saving himself and Camp Half-Blood. So again Percy and Annabeth undergo a quest, this time with Tyson tagging along.
Once again, Riordan manages to weave a fun tale of mythology and adventure, into the modern day world. Drawing on the myth of the Golden Fleece, and Homers epic adventures, the heroes head to the Sea of Monsters, a deadly isle, known currently as the Bermuda Triangle.