Here's a breakdown of the falling action:
* Camp Half-Blood's victory: The campers celebrate their victory over Kronos' forces.
* Daedalus's return: Daedalus, the inventor of the labyrinth, returns to Camp Half-Blood, where he intends to live out his days and share his knowledge with the demigods.
* Nico di Angelo's acceptance: Nico, who had been struggling with his powers and his identity, finally accepts himself and his role as a son of Hades.
* The prophecy: The prophecy about the final battle is revealed to be false, and the demigods realize that they will have to fight Kronos even if they weren't technically supposed to.
* The final battle: The book ends with the demigods preparing for the inevitable final battle against Kronos, signifying the rising tension and anticipation for the next book.
The falling action serves to wrap up the immediate conflict of the story while simultaneously building anticipation for the next chapter in the series, *The Last Olympian*.