Although The Son of Neptune was not a good read for me, I was still eager for the release of The Mark of Athena. Riordan ended The Son of Neptune with Argo II, Leo’s battleship, approaching Camp Jupiter. After waiting for a year, I was impatient to know if the Romans would attack first and ask questions later since there is enmity between the Greek and Roman demigod camps – whenever they get together, war ensues.
This proves to be true within the first few pages of The Mark of Athena. Those on Argo II from Camp Half-blood – Annabeth, Jason, Piper, Leo – were allowed to enter Camp Jupiter while Argo II hovers overhead. According to Terminus, the entire ship is a weapon (he is not wrong there) and thus it is not allowed inside the Pomerian Line.
Not wanting to upset the Romans, the Greeks acquiesced and entered the camp weaponless. All goes well for a while until Leo goes bonkers and opens fire on the Romans’ camp. The Romans immediately retaliate. The 7 demigods prophesized to go to Rome had to make a quick getaway. And so begins The Mark of Athena.