A movie star and a journalist find themselves on a strange road trip across the California desert. Allegra Coleman is Hollywood’s new new thing, a sumptuous young actress widely presumed to be an Oscar contender. Clementine James is a sardonic profile writer who’s tired of celebrities. After Allegra abruptly crashes the 1956 Porsche they are driving in and vanishes—inspiring candlelight vigils and round-the-clock television coverage—Clementine is given a taste of celebrity herself. And she’s tempted to embrace her new iconic status, until ghostly visits from screen sirens of long ago—including Natalie Wood, Loretta Young, Tallulah Bankhead, and Myrna Loy—remind her about the evanescent nature of fame.