A rap version of ``Saturday Night Fever.`` B-Rabbit, a wannabe rapper from the wrong side of Detroit’s 8 Mile, has problems: he dumps his girlfriend when she tells him she’s pregnant; to save money to make a demo tape, he moves into his alcoholic mom’s trailer; his job’s a dead end, and he’s just choked at the local head-to-head rap contest. Things improve when he meets Alex - an aspiring model headed for New York - and a fast-talking pal promises to set up the demo. Then new setbacks: Alex isn’t faithful, mom rejects him, rifts surface with his friends, and he’s mugged by rivals. Everything hinges on the next rap showdown at the club. Can B-Rabbit pull truth out of his cap?