Annabeth is kidnapped and gone for most of the book.
Percy is pining after her.
Thalia, him and a bunch of huntresses go out on a quest to rescue Artemis and Annabeth.
Lots of crazy stuff happens.
Luke is apparently cursed. Nico and Bianca are children of Hades yay!!!!! the moment it dawned on me I was so happy. so so happy. There better be loads of him next book!
Percy's mom found herself a boyfriend.
His dad is proud of him.
Although it was kind of ridiculous how the children held sway at the council in Olympus.