Silena reveals Kronos’s scythe charm and admits she has been the spy. She started helping Luke before he was evil, and then he did not let her stop. She explains that she wanted to bring the Ares cabin to help fight the Titans. Silena dies.

The campers keep fighting, and Percy says, “Clarisse did all the work” (298). The enemy retreats, and the campers return to the Empire State Building where they tend the wounded. Leneus dies and turns into a laurel sapling.

Percy, Annabeth, and Grover ride the elevator to Mount Olympus. They enter the palace and see Rachel in front of the thrones carrying Pandora’s jar. Percy warns her not to open it. They go to see Hestia, who is tending the hearth. Percy looks into the hearth and sees pleasant images of friends and family. Rachel tells Percy that she must let go of distractions so that she can “understand [her] true sight” (307). Percy is upset and says, “I was pretty sure Rachel had just dumped me” (307).

Before leaving, Percy entrusts Pandora’s jar to Hestia so that he will not be tempted to open it. Rachel stays with Hestia. Thalia arrives and announces that Kronos’s army is advancing.