I did not read any of the books, but this movie looked cute and my kids begged me to watch it, so we got it from the RedBox. today. I did not expect to be impressed, but it was actually very entertaining. The movie earned it's PG rating because of some scary elements (Medusa, Hydra, hellhounds...) but all of the kids LOVED it, even the 3 year old. Cute idea for a story, and it touches on a lot of Greek mythology. Percy Jackson is accused of stealing Zeus' lightning bolt, and finds out he himself is the son of Poseidon, making Percy a demi-god. He meets the offspring of other gods, and ends up having to go down to the underworld and then to Olympus. It is appropriate for younger viewers, no sex or swearing. Violence is limited to some battle scenes with other mythological creatures.