Priscilla Jackson-Wayne is a daughter of Poseidon and the adoptive daughter of Bruce Wayne. At night on the streets of Gotham she's Siren. Living in the horrible city, she's Gotham's little princess. But during one fateful night she finds out she can control water and that everyone in her adopted family as well as Wally West and Roy Harper are demigods. Fem!PercyXFem!Nico slash.