Each season, American Idol - the US version of the wildly successful British talent show Pop Idol - delivers on a promise whose epic story is unparalleled in the annals of competition and has reshaped celebrity culture: take an unknown dreamer from somewhere in the US and turn him or her into a genuine star. American Idol chronicles the triumphs and travails, the harrowing backstage drama and the nail-biting onstage battles that built this revolutionary show.