01/25/2013 09:35 am ET

'30 Rock' Finale Preview: Tracy Struggles With Kenneth As NBC President (EXCLUSIVE VIDEO)

The "30 Rock" finale is upon us and HuffPost TV has an exclusive preview of the series ender.

After Kenneth (Jack McBrayer) goes from NBC page to NBC president, Tracy (Tracy Morgan) has trouble adjusting to losing his go-to assistant. But when Dot Com (Kevin Brown) delivers a reality check, Tracy gets angry.

"He promised me he'd always be there for me, no matter what!" Tracy says in the video below.

"Times are changing," Dot Com says.

Indeed, times are changing. The final adventure of Liz Lemon airs on Thursday, Jan. 31 at 8 p.m. EST on NBC.

Here's how NBC describes the one-hour finale:

IN THE ’30 ROCK’ SERIES FINALE, LIZ LEMON (TINA FEY) AND THE ‘TGS’ GANG RETURN FOR A FINAL SHOW. In the one-hour series finale, 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”.

30 Rock