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The next day, there weren't many answers.
After the explosion, Piper and Jason — free-falling and unconscious — were plucked out of the sky by giant eagles and brought to safety, but Leo did not reappear. The entire Hephaestus cabin scoured the valley, finding bits and pieces of the Argo II's broken hull, but no sign of Festus the dragon or his master.
All the monsters had been destroyed or scattered. Greek and Roman casualties were heavy, but not nearly as bad as they might have been.
Overnight, the satyrs and nymphs disappeared into the woods for a convocation of the Cloven Elders. In the morning, Grover Underwood reappeared to announce that they could not sense the Earth Mother's presence. Nature was more or less back to normal. Apparently, Jason, Piper, and Leo's plan had worked. Gaea had been separated from her source of power, charmed to sleep and then atomized in the combined explosion of Leo's fire and — what Rory discovered later — Octavian's man-made comet.
An immortal could never die, but now Gaea would be like her husband, Ouranos. The earth would continue to function as normal, just as the sky did, but Gaea was now so dispersed and powerless that she could never again form a consciousness.
At least, that was the hope...
Octavian would be remembered for saving Rome by hurling himself into the sky in a fiery ball of death. But it was Leo Valdez who had made the real sacrifice.
The victory celebration at camp was muted, due to grief — not just for Leo but also for the many others who had died in battle. Shrouded demigods, both Greek and Roman, were burned at the campfire, and Chiron asked Nico to oversee the burial rites, who then asked Rory to help.
She agreed immediately. Rory was grateful for the opportunity to honor the dead. Even the hundreds of spectators didn't bother her.
The hardest part was afterwards, when Nico and the seven remaining demigods from the Argo II met on the porch of the Big House.
Jason hung his head. "We should have been there at the end. We could've helped Leo."
"It's not right," Piper agreed, wiping away her tears. "All that work getting the physician's cure, for nothing."
Hazel broke down crying. "Piper, where's the cure? Bring it out."
Bewildered, Piper reached into her belt pouch. She produced the chamois cloth package, but when she unfolded the cloth it was empty.
All eyes turned to Hazel.
"How?" Annabeth asked.
Frank put his arm around Hazel. "In Delos, Leo pulled the two of us aside. He pleaded with us to help him."
Through her tears, Hazel explained how she had switched the physician's cure for an illusion — a trick of the Mist — so that Leo could keep the real vial. Frank told them about Leo's plan to destroy a weakened Gaea with one massive fiery explosion. After talking with Nike and Apollo, Leo had been certain that such an explosion would kill any mortal within a quarter of a mile, so he knew he would have to get far away from everyone.
