Book 2 of return past series. read book 1, it is called Return to Past. After Zoe's death on mount othyrs Percy Jackson has a choice will he try to wipe out the gods by siding with the titans or will he stick with Olympus to get revenge on the ones the killed his love. He also has to deal with lady Styx because of his broken oath. How will it effect him. Can he get allies to side with him. Nyx the primordial goddess has taken an interest in the fate of Olympus and is choosing who to side with. Can Percy move on after Zoe's death. Can either of them make the right desicion?