On the upcoming one-hour series finale of 30 ROCK
, set to air Jan. 31, Liz (Fey) has difficulty adjusting to being a stay-at-home mom while Jack (Alec Baldwin
) takes stock of his life. Tracy (Tracy Morgan
) struggles without constant attention from Kenneth (Jack McBrayer
) as the former page settles into his new job as president of NBC
. Jenna (Jane Krakowski
) prepares an emotional farewell song as the cast and crew reunite for one final "TGS".