Demigods among us: The heir of Olympus

It was 15 years ago, when a Goddess was told to leave a child at a orphanage. The child's name was Ariadne, and she was a child of a God. Ariadne lived lonely at the orphanage, until when she was 8. She met another demigod, whose name was Jake. Ariadne and Jake had become the closest friends that earth could hold. As years passed by Ariadne reached 15, and Jake 16, and everything was fine, until the orphanage got attacked. A fury was sent to attack the demigods, but the orders were clear, the fury had to take Jake. As they take Jake,Ariadne feels that she has to find him at any price. That's when a couple of teenagers ask her to go with them, to explain who she really is, and why was Jake taken.