The group, Percy, Grover, and Annabeth, travel west to go and meet Hades, although the god who has turned was actually Ares. Percy later finds Zeus' lightning bolt in a backpack given to him by Ares. He returns it to Zeus, as well as Hades' Helm of Darkness, which was also in the possession of Ares. First, the store at Camp Half-blood loaned them some money to get started on their journey. Then they were able to take a bit of money from Medusa's barbecue restaurant after they chopped off her head. Hades is the god who has turned against his brothers, Zeus and Poseidon. Hades must have had someone steal the master bolt for him so that Zeus and Poseidon would wage war on one another. Hades is the god of the Underworld, which means that Percy and Grover have a ticket to Worm City. Annabeth, Percy, and Grover are the first heroes to return alive to Half-Blood Hill since Luke, so they participate in a traditional feast and burn the burial shrouds that the other campers made for them. ... She writes that she also put a deposit down on a new private school if Percy wants to attend and live at home.
