The Lightning Thief (Percy Jackson and the Olympians, Book 1) by Rick Riordan
Much as Percy is a nice child, he has continually failed to concentrate on his school work or even control his temper. He was sent to a boarding school, but things were only worsened. Percy could have sworn that his teacher turned into a monster and tried to kill him. When this landed in his mother’s ears, Percy is sent to Long Island, where his mother believes will be safe.
The place is called Camp Half Blood, a summer camp of demigods and from there, he learns that his father that he never knew is Poseidon, god of the sea. It’s not long when a mystery unfolds and together with his friends, (one a demigod- daughter of Athena and the other a satyr) head to a Hollywood studio to prevent a war between the gods.