Percy Jackson is one of those books that you can read it to children or read it yourself and still enjoy it, whether you are 20 or 80. 
 Story is about 12 year old boy named Percy, who discovers that Greek gods are still very much alive. Not only that, he a big part of that world, as the son of Poseidon. He finds himself in the middle of argument between Poseidon, Hades and Zeus, because of the alleged theft of Zeus's lightning bolt. And it is Percy's quest to find it and take it back to Mount Olympus, before the war break out. 
 Percy is the kind of character, which everyone can relate to, he is witty, loyal, down to earth guy, who didn't have much luck in his like. 
 Writing is really funny and smart. Book pulls you right in from the first page. And it also does justice to Greek Mythology, reviving old myths and making them relevant for today, with great amount of humor.