The Demigods of Camp Half-Blood and Camp Jupiter knew most, if not all, about their Greek and Roman lineage. Kind of in the name, actually. They also believe that the only remotely "magical" things in the world have to deal with the Greeks and Romans as well. They're wrong. What happens when they discover that not only does the mortal world have wonders of its own, but they also have very strange...ancestors? Great-great-great-great-great-great-great-great-great-great-great grandparents? Whatever they are, they aren't normal. Neither are the Demigods, though, so they're all in good company.