Jenna (Keri Russell) is a Pie Genius. At least she's been dubbed that by Becky (Cheryl Hines) and Dawn (Adrienne Shelly), her fellow waitresses at Joe's Pie Shop. Joe's is a small town diner where Jenna's daily pie creations—from Marshmallow Mermaid Pie to Falling in Love Chocolate Mousse Pie to Lonely Chicago Pie—are the main attraction. These aren't just mouth-watering confections, they're like Jenna's edible life journal.
The life she's journaling about has just gotten messier. It's bad enough that she's married to Earl (Jeremy Sisto), the emotionally stunted, verbally abusive boy-man, but thanks to the night he got her drunk and got her to sleep with him, Jenna is now pregnant. Cue a new pie: I Don't Want Earl's Baby Pie, which, for the sake of decorum, gets shortened to Bad Baby Pie.
From the get-go, Jenna is resentful of her baby. For months she's been hiding money from Earl, saving up to leave him and start a new life somewhere else. A baby ruins all that. But the baby does lead her to Dr. Pomatter (Nathan Fillion), the dreamy new doctor in town who'll be handling her prenatal care … and then some. The two are instantly smitten with one another and are soon attacking each other on the front lawn of the quaint little home that houses the medical practice. To hallelujah chorus music, no less. Though they give lip service to the fact that this is wrong—they're both married and she's pregnant—they keep going at each other like hungry animals.
Throughout the rest of the movie we watch how the pregnancy and the affair affect Jenna, who despite her pie genius has been sleepwalking through her miserable life. This change is most interestingly portrayed when Becky and Dawn give Jenna a baby book ...1