Prologue, kind of?

What happens when one of the Twelve Olympians breaks an oath? What happens when a fifteen-year-old discovers there might be more divine blood than mortal blood coursing through her veins?

Arianna has lived in her beautiful Country, Italy, for sixteen years now. One day, however, while she was on a school trip with her class visiting Venice, a series of unusual events slowly led her towards her own fate.

[ Disclaimer: I do not own any of the characters besides Arianna, all the rights go to Rick Riordan. ]