The movie opens with Poseidon (Kevin McKidd) meeting up with Zeus (Sean Bean) on the top of the Empire State Building. Zeus comments that the storm clouds have no lightning and tells Poseidon that his master bolt has been stolen. Zeus blames Poseidon's son for the theft, though Poseidon claims his son does not even know anything of the gods and his identity, and gives Poseidon 14 days to return it or there would be war. Zeus then proceeds through the doorway to Olympus.

Percy Jackson (Logan Lerman) is introduced underwater holding his breath for seven minutes then emerging to a stunned Grover (Brandon T. Jackson), Percy's best friend. Percy goes back to his old apartment where his mother, Sally Jackson (Catherine Keener), is waiting for him. Sally lives with Percy's abusive stepfather, Gabe Ugliano (Joe Pantoliano). The next day, during a field trip to the Greek museum, a Fury disguised as Percy's substitute English teacher lures him away from the crowd. She attacks him, questioning him about the bolt. When Percy denies even hearing about one, she attacks. Before she can attack Percy further,Grover and Percy's Latin teacher, Mr Brunner (Pierce Brosnan), arrive and the Fury crashes out through a window. Mr Brunner orders Grover to take Percy to Camp Half-Blood, giving Percy the magical pen. Bewildered, Percy takes it anyway. They stop first at Percy's apartment to warn Sally. After knocking out Gabe, Percy, Grover and Sally take Gabe's car to Camp Half-Blood.

On the way there, Sally tells Percy about how his father was so charming and how he was forced to leave. The conversation is cut short when a cow is thrown into the the path of the car, effectively overturning it. When the car is flipped Grover reveals he is a satyr, a half human, half goat hybrid. He uses his hooves to break out of the car. They race to Half-Blood Hill on foot with the Minotaur on their tail. When they reach Camp Half-Blood's magical barrier, Grover and Percy go through, but the magical defences disallow Sally from entering. Now at the mercy of the Minotaur, Sally is picked up by the Minotaur, who proceeds to squeeze her. Sally turns into a shower of light and disappears. Percy attacks the Minotaur with Riptide. The sword falls out of reach to him, but he manages to kill the Minotaur with one of its horns. He passes out afterward from exhaustion.
READ MORE