Hollywood publicist Lee Philips (Billy Crystal) has a tough task on his hands. He must get the now-separated superstar couple Gwen Harrison (Catherine Zeta Jones) and Eddie Thomas (John Cusack) to appear together in public one last time in order to promote their upcoming film. Lee knows that Eddie and Gwen now hate each other, so he quickly resorts to underhand tactics, and asks Gwen's sister Kiki (Julia Roberts) to give him a hand. However, just when things seem to be working out, Kiki and Eddie begin taking an interest in each other, which brings a whole new round of problems.