Summary: When Percy gets possessed by dark magic and forcefully breaks an ancient law and gets framed as a traitor, he's given a punishment: a one-way ticket to Tartarus.
He's sent to Olympus to have a word with his fellow gods, family and friends. Hera was more than happy to get rid of Percy Jackson, the boyfriend of ugh, Annabeth.
But then Hera notices that his father Poseidon turned his back on Percy. So did Paul and everyone of Percy's friends. So did Annabeth and even Sally.
That's when Hera pities Percy for all the hate he's been getting from his friends. And his own family. After all, Hera is the goddess of marriage and is responsible for keeping families together. Whether she likes it or not.