Okay, so I got the book, I read the book, I loved the book. I really don't want to give to much spoilers, but there isn't much I can do to stop myself. The Mark of Athena starts with Annabeth and a giant warship. The Greek and Roman demi-gods meet and manage to avoid killing each other, until Leo goes crazy and fires on Camp Jupiter and that pretty much starts a war. Percy and Annabeth are re-united briefly before they have to jump aboard the Argo 2, Leo's awesome war ship, to avoid the angry Roman demi-gods. The nice Roman demi-gods, Jason, Hazel and Frank, jump aboard the Argo 2 as well, and the seven questers get out of there as fast as possible. After trying, and failing, to figure out why Leo went crazy, they get some supplies to repair the ship, Leo starts a fan club of nymphs before they realize that they don't like Leo, Hazel and Leo meet Nemesis the goddess of revenge, and Echo the girl cursed to always repeat the last thing she hears, all wh...