Ex-stripper Bridget (Sarah Michelle Gellar), a recovering addict slated to testify in a murder trial, flees protective custody and reunites with her wealthy identical twin Siobhan, who soon disappears while on a boating excursion. In a desperate effort to avoid the feds and mobsters now hunting her, Bridget passes herself off as Siobhan, but as she soon learns, the new pose hasn't made her any safer: someone is apparently targeting Siobhan for elimination