Liz is appalled that Dennis left whiskers in the sink, chews with his mouth open, assumes they're having kids together, and messes up her hair. After giving blood later in the morning, Liz tells a nurse that she's breaking up with him later in the day.Liz finds Jenna crying because Jack bumped her from Conan for that night's show and put Tracy on instead. Scott can't believe that Conan is having Tracy on again after Tracy almost stabbed Conan the last time. Liz talks to Jack about this, and he assures her it's for the good of the show.Tracy enlists the writers to help make him more charming for his appearance on Conan; he sees it as a chance to redeem himself in front of America. They start by asking Tracy some personal questions, and his responses are insane, to say the least. Things go from bad to worse when Tracy hallucinates a "blue dude" following him around.With only two hours until Conan tapes, Liz finds Tracy going completely crazy from a bad reaction to some new meds his doctor put him on. Liz gets a hold of Tracy's doctor, who insists that Tracy will be fine if he's kept away from loud music, bright lights, and crowds.As Kenneth races to pick up some kind of sedative for Tracy, Tracy goes out of his mind, screaming that the blue dude is after him as his handlers drag him into hair and makeup for Conan. In the halls, Conan spies Tracy acting goofy; Liz assures him that Tracy is just doing vocal warm-ups for the show.Kenneth gets the medicine to Tracy only moments before Tracy's to go on stage with Conan. Liz pours the pills down his throat as Conan introduces Tracy. Tracy's pushed out onto the stage and does a funky dance until Conan gets him to his seat, where he promptly falls asleep. After a long day, Liz gets home to find Dennis playing video games. She's so exhausted that she can't bring herself to break up with him, and she promptly falls asleep as he plays "Halo."