Percy returns from a solo quest he barely survives only to see his worst nightmare has come true. Camp half-blood is in flames. From the rubble he can one find a few campers, none which he knows.
Dead campers have been captured from Elysium and murdered from rebirth to be thrown into tartarus. The remaining forces of Gaia and Kronos try to rise them again. They are solely trying to take out Olympus.
Percy is ready. Him and a collection of new and old campers will try to save their friends, protect their family, fight the everlasting pain, and save their home.
The demigods safe havens are burning, but our heroes aren't afraid. They can stand tall, even against all odds. Raise your weapons to the sky and prepare to fight. Live or die we will fight through the the night to save what's right. Now let me hear you one last time. "FOR OLYMPUS!"