Liz wanted to talk to Jack about getting new jackets for the cast and crew of the show. He flipped out, but not because of her. He was stressed because he had just gotten off the phone with a mystery person with a "407" area code. It turned out the mystery caller was his mother.
Jenna came over for cake at Liz's house. Liz had something else on her mind. After talking to her engaged assistant, Liz started thinking more and more about babies. Jenna reminded Liz that her biological clock was ticking and she really didn't have that much time if she really wanted a kid.
Liz discovered that Jenna told everybody that she was looking to get pregnant. Liz was upset that Jenna would share that kind of private information. Liz finally had to make the announcement to the entire staff that she was not looking for a sperm donor!
Tracy was having a problem with Josh constantly doing impersonations of him. He threatened to go to Jack about his problem. Josh later prank called Tracy pretending to be Jack and Tracy fell for the prank.
Jack called Liz into a meeting to discuss her biological clock. He decided to take it upon himself to give her a little parenting advice. He told her not to smother the child, the way his mother smothered him. Liz started giving him advice on how to deal with his mother. They were interrupted by another phone call from Jack's mother.
In order for Josh to cover his tracks with Jack and Tracy, he called Jack and pretended to be Tracy. Once he smoothed things over with Jack, he called Tracy as Jack and smoothed things over. Liz was relieved once that was taken care of.
Jenna's make-up artist had to bring her baby to work and asked Liz to watch her while she completed Jenna's make-up. Liz had so much fun that she didn't realize she took the baby home! She instantly rushed back to the work.
Liz returned the baby but was shocked to find out that everybody was looking for her. They all thought that Liz had kidnapped her! Jack wanted to know what Liz's body was really telling her. Liz told Jack it made her realize that she needs to develop more of a personal life.