Percy and his friends travels to a lot of places they battle against many monsters. Finally they reach the Underworld and ask Hades if he know about the missing lighting bolt. since Hades and Zeus are not in good condition they think that he might stole it.
Do you know anthing about the lightning bolt
I don't have the bolt.Also I don't have my helm
Percy discover Ares had stolen the helm and the master bolt from the original thief. They fight and Percy wounds Ares, after that Percy and friends return the helm and bolt to their owners.
HAHAHHA I love War!!!
Later on Luke confesses to Percy that he stole the bolt and the helm. Luke works for the titan Kronos means he planning to star a war between the Olympian gods.