The story starts with Percy and his friend, Tyson, playing dodgeball in the gym with their class. All of a sudden there are monsters throwing fireballs at Percy .
Later on in the story, Annabeth helps Percy and Tyson to escape the evil monsters. When they arrive at their half-blood and half-god camp, Annabeth and Percy realize that the tree that protects them from danger is dying.
Annabeth fell on her knees and is dying from some poison. Percy decides to take the golden fleece on the tree and put it on Annabeth hair's reviving her to life.