Third Book of Destinies Series. A fall into the endless abyss. A journey never taken by the heroes of old. Percy Jackson and Zoë Nightshade embark on a quest to do the impossible. A race against time through the worst place in the mythical world. Can they reach the heart of Tartarus and close the Doors of Death or will Gaea win out and turn the mortal world to ash?

Percy/avengers Thor tells the team about the gods and camp To make sure they are not threats fury sends the avengers to learn the way of a demigod But when they meet there teacher Percy They have a lot to learn about monsters And Percy's life

Grief and sadness. That is all I felt. I could have saved them. But now Hazel, Frank, Jason, and Piper were dead. Just because that stupid dirt face had to rule the Earth. At least I still had Annabeth. I have never left her side since the battle in Greece. But now S.H.I.E.L.D has a interest in demigods. Will the demigods win with their swords or the mortals win with their guns? Characters by Rick Riordan and Marvel