Rock gives fans a peek into the behind-the-scenes of a fictitious sketch comedy show called TGS with Tracy Jordan, run by Liz Lemon (Tina Fey).

American sitcom 30 Rock consists of seven seasons that aired on NBC from October 11, 2006, to January 31, 2013.

Rock (2006-2013) is satirical comedy at its peak, following the story of Liz Lemon (creator and writer Tina Fey), the head writer for 'TGS with Tracy Jordan', a sketch comedy show.