17-year-old Eugene Martone has a fascination for
blues music while studying
classical guitar at the
Juilliard School in New York City. Researching blues and guitar music brings famed
Robert Johnson's mythically creative acclaim to his attention; especially intriguing are the legends surrounding exactly how Johnson became so talented – most notably the one claiming he "sold his soul to the
Devil at the crossroads", as well as a famed "missing song" that was lost, supposedly evermore, to the world. In his quest to find this song, he researches old archived newspaper clippings, learning that Johnson's longtime friend, musician
Willie Brown, is alive and incarcerated for murder or attempted murder in a nearby minimum security hospital. Eugene goes to see the elderly man, who denies several times that he is
that Willie Brown. He finally admits his identity after hearing Eugene play some blues (but notes that Eugene "plays with no soul"). Willie then says he knows the missing Robert Johnson tune in question but refuses to give it to Eugene unless the boy breaks him out of the facility and gets him to Mississippi, where he has unfinished business to settle. Eugene agrees and they head south. The boy soon realizes, however, that Willie is constantly running minor scams, such as falsely claiming that he has enough money to cover their bus tickets (although Willie may have done this on purpose, so Eugene would experience some real hardship). With only $40 on them, they end up "
hoboing" from Memphis to Mississippi. Willie scolds Eugene for playing an old guitar in order to give the impression to be a bluesman, but it was
Muddy Waters who invented electricity. Hence, Eugene trades his last valuables in a pawn shop for a
Fender Telecaster and a portable
Pignose amplifier. Willie further tells Eugene that the secret of playing the blues is using a
slide. During their quest, Eugene and Willie experience the blues legacy of Robert Johnson first-hand, taking part in an impromptu jam session at a "
jook joint" (as Willie calls it), where Eugene is given the nickname "Lightning Boy" by Willie because of his musical skill. Eugene jokingly suggests that he himself ought to "sell his soul to the Devil at the crossroads", Willie angrily slaps him and demands he is not to joke about that. The pair meet 17-year-old Frances, who is fleeing her abusive stepfather. She hitchhikes with them, and she and Eugene start a relationship. When she abandons them to continue her own journey, Eugene is left heartbroken but with a deeper feeling for the blues. At the same time, Willie confesses that there is no missing Johnson song, but tells the boy that he has proven himself far beyond what learning any blues song could ever teach him. They reach a deserted crossroads in rural Mississippi, where Willie reveals his secret: his ability on the harmonica came about because of a deal with the Devil, which he made at this very location. Willie now hopes to end the deal. The Devil, who calls himself
Scratch and
Legba, shows up and insists that the contract for Willie's soul is still valid, even if Willie is dissatisfied with how his life turned out. Eugene, believing the other two are joking around, steps into the conversation. The Devil offers a challenge: if Eugene can come to a special concert and win a
guitar battle against his ringer guitarist, then Willie gets his soul back. If Eugene loses, then Eugene too forfeits his soul. Despite Willie's protests, Eugene agrees to the deal. Willie and Eugene are transported to a music hall, where metal-blues guitar master Jack Butler, who also sold his soul for musical ability, is wowing the crowd with his prowess. Eugene, now understanding the situation, receives a
mojo bag from Willie to hold in his pocket. He also slips his slide on, giving him a perceived advantage over his opponent. Eugene and Butler trade flamboyant guitar parts, with each able to top the other. Eventually, Eugene falls back on his classical training, playing a fast and difficult piece that Butler cannot match. Dejected, Butler drops his guitar and strides off, and the Devil tears up Willie's contract, freeing the bluesman's soul. Willie and Eugene are transported back to Mississippi, where they start walking again, deciding to head to Chicago to play together. Willie tells Eugene that after their stay in Chicago they must part ways, so Eugene can go out on his own "to take the music somewhere else." ==Cast==