Jack Donaghy bumps Jenna Maroney's scheduled appearance on Late Night with Conan O'Brien by booking new star Tracy Jordan. Jenna, still irate over watching the show change to TGS with Tracy Jordan, lashes out at Liz. To make matters worse, Tracy's gone off his medication and he's about to go on national television. Will Kenneth the Page fulfill his quest of finding Tracy's prescription and control his erratic behavior? Will Jenna have a nervous breakdown? And will Liz ever break up with Dennis (special guest star Dean Winters)?