User blog comment:Hermione Chase/"The Blood of Olympus" Expectations/@comment-5927468-20140810181952/@comment-3146930-20140810184720

Pluto mentions it will be lifted by a descendant of Neptune. However Percy and Frank are both children of Poseidon and Arion is originally a child of Poseidon, but in the books is a child of Neptune. It may be that it is a new character in the book, but maybe Rick will be loose with the rules and Frank/Percy do it.