The name's Jackson - Percy Jackson - it may not be the most contemporary of names but this guy has got a couple of beautiful woman fighting of him - he also has a half brother who's a cyclops and a buddy who's a sort of half goat /pan thing. Also his dad is Poseidon. I don't think this had the line "based on true events" like so many ridiculous films do these days.

IMDB Plot Summary -

In this retelling of Rick Riordans book, "The Sea of Monsters", Percy Jackson, accompanied by his friends Annabeth Chase, Clarisse La Rue and Tyson, his half brother, goes on a journey to the Sea of Monsters to retrieve the Golden Fleece and save Camp Half-Blood.