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?

Everyone wakes up after being shown the same dream...their world ending. (Warning: Includes Solangelo; don't like, don't read.)

Percy was a young and tortured son of Neptune. Mercury finds him and offers him a new home in a very unlikely place, the underworld. Percy is trained to the be the most powerful demigod to ever live and is sent to Camp Jupiter by Lord Pluto. With Reyna and his two siblings at his side he will do impossible feats, but its all a warm up until he can avenge his mother, to Neptune!