When his lightning bolt is stolen, Zeus accuses Poseidon's son Percy Jackson and gives Poseidon's son fourteen days to return it, otherwise he will initiate a war amongst the gods. Meanwhile the teenager, Percy, who is dyslexic and has ADHD is visiting The Museum of Metropolitan of Art and is attacked by a Fury disguised in his teacher. His physically handicapped best friend Grover reveals that Percy is a demigod and that he is his protector and his teacher Mr Brunner gives him a pen telling him...