Banished to Tartarus by the orders of the Fates, Percy is left to fend for himself, not even having his trusty Riptide at his side. He has ten years before he is to be freed, but beings older than time itself are stirring, leaving only Percy to face off an ancient threat. In order to fight this threat, Percy has to sacrifice who he is, and become someone new. A king. Rewriting!

The Persian Pantheon is at its end. All Persian demigods but one have been killed by the self-proclaimed "God-King" Xerxes. Now, Perseus, the last demigod, and the last of any who have ties to the Persian Pantheon is on his own. The first being who is truly free from anything including Fate itself. What will he do? Only time may tell. AU.