As they head towards Hephaestus' forge in Mount St. Helens, they find telekhines there making a weapon for Kronos. Percy tells Annabeth to escape while she can. She kisses him for luck and they part ways. Annabeth believes that he dies when Mount St. Helens erupts, but this is not the case. Percy fell onto the island Ogygia, prison of the nymph Calypso, a daughter of Atlas. When Percy comes back to camp, Annabeth is performing a funeral ritual for him. When she notices him, she hugs him, making a scene. However, when she finds out about Calypso, she is very jealous. Percy then asks a mortal girl, Rachel Elizabeth Dare, to help them on their way through the Labyrinth (Rachel has a rare ability to see through the Mist). Annabeth becomes very jealous at how close Percy and Rachel are getting. The three of them discover Luke, who has become Kronos's vessel. After a battle, Luke is forced back into the Labyrinth, leaving two casualties. Annabeth refuses to believe that Luke is all bad, and gets quite mad at Percy for saying otherwise.