Percy's best friend Grover Underwood and his Latin teacher Mr. Brunner gives Percy a pen which he claims is a very powerful cosmic weapon, and instructs Grover to take Percy and his mother Sally to Camp Half-Blood - a hidden summer camp for demigod children on Long Island. There, they are attacked by the Minotaur, who seemingly kills Percy's mother. Brunner's pen is a magical sword, and uses to fight off the Minotaur, killing it with its own horn. Waking up three days later, Percy learns he is the son of Poseidon, Grover is a satyr and Percy’s protector, and "Mr. Percy starts coming into his latent demigod powers, which include hydrokinesis and healing, and meets other demigods, including Annabeth Chase, daughter of Athena and Camp Leader Luke Castellan, son of Hermes. Percy is visited by an apparition of Hades, who reveals the Minotaur abducted Sally to the Underworld to trade for the lightning bolt. Defying Chiron's orders, Percy sets out for the Underworld with Grover and Annabeth. Luke gives Percy a map with the location of three green pearls belonging to Hades' wife, Persephone, which will allow them to escape the Underworld. Percy is also given a pair of flying winged shoes stolen from Hermes, and Luke's favorite shield.Īt a garden centre in New Jersey, with a help from Grover and Annabeth, Percy manage to decapitate Medusa and takes the first pearl from her corpse. At the Parthenon in Nashville, Percy uses the shoes to retrieve the second pearl from the crown of the statue of Athena there, and Grover kills a Hydra with Medusa's head. The trio arrive at the Lotus Hotel and Casino in Las Vegas to obtain the third pearl however, they forget their mission after eating lotus flowers. Those who eat the lotus flowers are isolated from the outside world and lose sense of time, a reference to the Lotus-Eaters.
Percy snaps out from the spell of the lotus flower after hearing the voice of his father, Poseidon, through telepathy telling him not to eat any more flowers. Percy frees Grover and Annabeth from the flowers' effects they locate the final pearl in the casino and escape the hotel. Annabeth realizes that they only have one day left to prevent the gods' war, as they were in the casino for five days. With all three pearls, Percy, Grover, and Annabeth enter the portal to the Underworld. In the Underworld, Hades finds the lightning bolt hidden inside Luke's shield, revealing that Luke was the thief all along. Hades tries to kill the trio, but Persephone turns on him in retaliation for imprisoning her, and gives the bolt to Percy. As they only have three pearls, Grover remains behind, while Percy, Annabeth, and Sally teleport to the Empire State Building, the entrance to Mount Olympus.
However, before they can enter, they are ambushed by Luke, who reveals that he stole the bolt to demolish Mount Olympus and establish the demigods as new rulers of Western civilization. PERCY JACKSON THE LIGHTNING THIEF FULL MOVIE GOMOVIES SERIES.