The Oracle's Quest

The game of godly revenge isn't over yet.
SPOILERS FROM BLOOD OF OLYMPUS."I'm ssso glad we could chat dear. I have been wanting to meet you sssince Gaea resssurected me."
Rachel could see a thick, scaly tail undulating in the pitch black, almost as if she were in a cave and the only light was shining on that one place. The voice speaking was hoarse and snake-like, with a cheesey drawn-out ssss in font of its words. The voice made Rachel quake with fear, though she didn't know why. She tried to speak: "who are you", but her mouth wouldn't move.
"I am the mighty Python, my dear."
Turns out the snake could read her mind. Typical. Python laughed, or at least made some ungodly sound that resembled a laugh.
"Sssilly girl. You call yourssself an oracle. I WAS THE FIRSSST, I WAS THE GREATESSST! But that doesssn't matter now. Apollo dessstroyed me, ssso I ssshall dessstroy his prophecy. Ssstarting with you, puny mortal. Let your pitiful friendsss try to ssstop me. I darethem."
Rachel's sight completely cleared and she gasped when she saw Python laughing at his joke. He was at least fifteen feet long, and a foot thick. Python had four fangs that were as long as daggers, and red pits for eyes. His reptilian skin was a pattern of black and green diamonds, and behind his head he had a red crown, like a basilisk's. Python turned towards Rachel with his red eyes glittering, and lunged.

All is well since the demigods won the battle with Gaea, but there is still unfinished business. Gaea promised something to every ally of hers, and to Python, she had granted him the chance to slay Apollo and take over Delphi once again. He spent the majority of the giant war brooding in Delphi, with an army of monsters, and now comes his revenge, starting with capturing Rachel Dare.
To stop Python, magic, trickery, and crazy demigods will be needed. And maybe a Python-style prophecy.
BE WARNED:
People will go missing
Blood shall be spilled
Ships will be shipped
Feels will be felt.