Resolution
In the end of the novel, Annabeth and Percy travel to the Doors of Death in Tartarus. On the way, they encounter a Giant who aids them in the end. At the Doors of Death, the demigods encounter two Titans and Tartarus himself. The friendly Giant helps distract Tartarus and the other Titans allowing Percy and Annabeth to escape Tartarus and close the Doors of Death. The other demigods manage to get to Greece, only to encounter an army of monsters and two more Titans. In the end, the Doors were closed but the story continues with the next book.