Based more-than-loosely on backstage shenanigans at `Saturday Night Live', `30 Rock' centres on young Liz Lemon, currently head writer for a live sketch-comedy show in New York. Complications follow when the network's new president orders Liz to hire mentally unstable movie star Tracy Jordan to join the cast, throwing neurotic leading lady (and Liz's best friend) Jenna Maroney into a tizzy. Liz tries to juggle all the egos around her while trying to chase her own dream.