KJR is depressed after being told by his mother, Mamma Mia, to give up on rapping. B.B.B. and friends can't bear to see him so down, so they decide to help make KJR's concert a success so Mamma Mia will accept his rapping career! They promote the concert all around town and manage to pack the venue, but the huge crowd gives KJR stage fright! Will he be able to stay a rapper?!