Annabeth and Percy arrive at monster island, with the abnormally large sheep, to obtain The Fleece.
Annabeth and Percy climb a cliff and discover Polyphemus's cave, where they find Grover and Clarisse having conflict with Polyphemus. They both soon get locked down in the cave while Polyphemus is away
Percy and Annabeth had a plan to save them, and it got Percy in the cave safely, while Polyphemus was focused on Annabeth. He soon found both of them in the cave, although Annabeth had gotten caught.
All 3 of them attempt to attack the cyclops to save Annabeth. They take Annabeth from Polyphemus, although the cyclops caught up with them at the bridge.
Percy is extremely angered by this and takes all of it out on Polyphemus, making the cyclops weakened. Percy tries to spare him, although he declines and tries to eat him, although before he can, Tyson comes in and knocks him out.
Tyson then heads for The Fleece and gives it to Percy. He uses it to heal Annabeth's wounds. They have to escape the island now using the boat, but then Polyphemus becomes conscious again and starts chasing after them.