Hayley is going to have the best year ever. After years of careful planning, she's ready to serve as student council president and editor-in-chief of the newspaper. Ivy League, here she comes! However, just before student council elections, someone creates a fake Facebook profile for Hayley and starts posting inappropriate photos and incriminating updates. It must be the work of a highly skilled Photoshopper, but the attention to detail is scary. The embarrassing photos of "Hayley" in her bathing suit reveal a birthmark on her back, a birth mark Hayley has never shown in public... The situation escalates until Hayley's mother reveals some shocking information. Hayley isn't an only child: She has a twin sister who was adopted by a different family. And that's not all. Soon, Hayley discovers that her long-lost sister isn't just playing a prank; she's plotting to take over Hayley's life...by any means necessary.