Nice conclusion to the Percy series. Sometimes what you think is planned is way off course. Percy believes he is fated to die on or before his 16th birthday, but is ready to sacrifice himself to save New York. However, this final clash isn't all about him. Luke, Annabeth, Grover and many others all play a part in this final clash. Who knows what the future holds when everyone works together. Life will go on or maybe not!

All year the half-bloods have been preparing for battle against the Titans, knowing the odds of a victory are grim. Kronos’s army is stronger than ever, and with every god and half-blood he recruits, the evil Titan’s power only grows. While the Olympians struggle to contain the rampaging monster Typhon, Kronos begins his advance on New York City, where Mount Olympus stands virtually unguarded. Now it’s up to Percy Jackson and an army of young demigods to stop the Lord of Time. In this momentous final book in the New York Times best-selling series, the long-awaited prophecy surrounding Percy’s sixteenth birthday unfolds. And as the battle for Western civilization rages on the streets of Manhattan, Percy faces a terrifying suspicion that he may be fighting against his own fate.
Goodreads.