After the war with Gaea, Percy and the demigod camps are back home and settled down, until a new threat comes, and this time, it's one Percy has battled before, Tartarus. Not only Tartarus, but a new demigod has come to Camp Half-Blood, his name is Eric. As soon as he comes, everyone betrays Percy for Eric, as if a spell was cast on them. But this is no fairy tale. Read to find out what happens to Percy, and the whole crew.