Now that Calypso is freed from her curse, she lives at Camp Half Blood with Leo.
After a very awkward reunion with Percy and a surreal introduction to everyone else she settles down quite well. All is finally going right for once.
That is until Calypso's father finds out she's free. Atlas has escaped from his burden, and with a personal vendetta against Percabeth; he is determined to destroy them all and be reunited with his daughter.
Will he suceed, or will his plans be foiled?