30 Rock Season 4 Episode 2

When Devin returns to plot revenge against Jack, he needs to find a way to protect the company and his job's safety. Meanwhile, Tracy and Jenna both have reason to be angry with Liz and are determined to make her life miserable. Liz has to find a way to regain order over her life and the show. Outside of the studio, Kenneth devotes some of his spare time to volunteering at an animal shelter.