When Adrien Agreste (a supermodel from Paris) visits the city of New York, all of the girls go instantly lovestruck. All of them, that is, except for three. But when one of the three unintentionally befriends Adrien, she and her two friends find themselves as the protectors of New York with no idea how it happened.

Two British step-sisters and their American friend are die-hard Percy Jackson fangirls. But after some strange encounters and a surprise turn of events, they begin to realize that it might not all be 'just fiction'.