The New Camper - A Percy Jackson Fan Fiction

Percy is now starting his fourth summer at Camp Half-Blood when a new girl happens to show up one night. She's beautiful, brave, strong, and definitely mysterious. Oh, and she happens to be Percy's sister. No one at camp has any idea who she really is or where she might have come from and neither does she. Weird happenings start popping up all over camp and with Percy's 16th birthday deadline getting closer each summer, this summer will be tough. But...is he really the one the prophecy is about now that there's a new girl here? To top it off, Annabeth is on edge about something and won't speak to Percy. How will it all end?