Annabeth managed to escape Tartarus and join the seven in the war against Gaea, but Percy was left behind. Now, three centuries later the Doors of Death are opening again and nine heroes descend into the Pit. The events which follow, none of them could have anticipated. Everyone says that time heals all wounds, but Percy knows it leaves only scars.

"I go back in my past to face whatever I have left" / Love is something that Nico struggles with. He can't admit his own feelings, at least not to Percy. But maybe that will all change with a book. It's called 'The House of Hades', and when Percy reads it, things can get pretty awkward between him and the son of Poseidon...