Percy realizes he is a demigod and is being framed as the lightning bolt. At Camp half-blood, he starts a quest with Annabeth and Grover to find the missing lightning bolt and return it before the summer solstice
Percy and his friends face time and nature as they struggle to find the lightning bolts going on a quest across America. The look for clues and evidence of the missing bolt and even going to the underworld.
You Should have died I'll kill you
Percy, Annabeth, and Grover go westwards on their way to the underworld. They fought many monsters even Medusa they got trapped in the lotus hotel but broke out. Finally, they arrived and Los Angeles taking the elevator to the underworld to confront Hades.
Percy confronts Hades and proves he was not the theive be obtaining the lighting bolt and Hade's helm which was a trick of Ares the entire time. Percy fights Ares and defeats him winning back the bolt and helm.
Percy Annabeth and Grover flys back to NewYork and returns the lightning bolt to Olympus. Luke portrayed as the culprit attempting to kill percy but was unsuccessful. Percy returns to school living a normal life.
Percy makes amends with his father meeting Poseidon for the first time and stopped war between the gods. Percy helped maintain peace in western civilization and prevented its destruction.