Disclaimer: I do not own the Percy jackson universe I also got the idea for this story in another story there are several differences like Odin and the norns involvement the title and author
It all started when a new son of Poseidon arrived at camp half blood
His name was Arthur Fleming a blonde kid who couldn't use a weapon too save his life somehow turned most of camp half-blood against Percy
One by one the people Percy fought side by side with left him to follow Arthur, all except the Stolls, Clarisse, Nico, Katie, Will, Thalia, and Tyson
A month after Arthur arrived Annabeth broke up with Percy leaving him broken, grover never knew about Arthur, and Chiron began to favor the boy,
Arthur began to spread rumors about Percy, that he made a deal with Kronos, that Gea rose to make him more heroic, people began to see him as the mastermind behind both wars in an attempt to make himself the hero
When the gods found out they discussed it for months then on the summer solstice the brought Percy to Olympus to be executed