Achy Breaky Heart

When the drummer in Marcus' band Mackadocious has to drop out because of his failing grades, the band has to search for a new drummer and finds one in a girl named Stacey. T.J. also becomes the band's manager and helps Marcus get his groove back after he gets dumped by Stacey and goes back to her ex-boyfriend, and has to deal with Mo's new girlfriend -- who doesn't talk for herself.