God and the Devil are at a bowling alley. The Devil tells God that Bob is going to be his. God isn't sure; it's too early to tell. Donna's thinking about going back to college, but she's having a terrible time deciding on a major. She's trying to get Bob to pay attention to her problem when screaming erupts across the street. It's their neighbors Randy and Stacey Bickford; clearly their fights have become nightly entertainment for Megan and Andy who consider this their own private soap opera.
Bob sends the kids to bed and tries to get Donna to have sex with him, but she's not in the mood. The Devil appears and talks to Bob about what his life could have been like if he weren't tied down with a wife and family. God drops by in the middle of the Devil's pitch, and the Devil takes off. God tells Bob that his neighbors have an adultery problem. Bob's assignment is to save the Bickfords' marriage.
Bob goes over to talk to Stacey but chickens out when she comes to the door. The Devil appears in Bob's car and asks what God's going to do for Bob if he fixes the Bickfords' marriage; when Bob says he doesn't know, the Devil says that God's a user. God stops by later and chides Bob for his lack of progress. Bob reminds God that he has free will. He's just realized that he can say "no" to God, but he doesn't. He'll still try to finish his assignment.
He goes to Stacey's and sees her on the couch undressed with a guy named Carl Borden, fat, bald and ugly. He tries to tell Donna about it; she says he's not God's messenger on earth. At best he's a deluded peeping Tom. Bob tries to watch TV, but God, using the voices of various TV stars, reminds Bob that he has to help Stacey. He dashes across the street and tells Stacey that she has to stop committing adultery. She bursts into tears. This confrontation leads to phone calls from Stacey and invitations to her house so they can discuss her problem.
Bob tells Donna that he's doing the Lord's work, but she's unimpressed. She clearly doesn't trust him. One evening when they're talking in her living room at 1:30 in the morning, Stacey asks Bob if he wants to see her naked. Bob takes off but runs into the Devil who's outside in a 1968 Dodge Charger. It's the coolest car Bob's ever seen. The Devil says it's time to find the old Bob, the Bob who was there before Donna crushed his spirit. They peel off in the car. The Devil shows Bob how he can turn any woman into a gorgeous babe. Bob and the Devil are suddenly alone on a stage. The Devil breaks into a rendition of "Don't Rain on My Parade" as Bob has a fantasy about Stacey. Bob wakes up at Stacey's door being doused by her sprinklers. She takes him inside and starts taking off his clothes. God, not too subtly, starts trying to get Bob's attention but nothing sinks in. Things are progressing until Bob hears "Donna" being played on the radio. He escapes just in time.
The next morning God and Bob are in Bob's kitchen. Bob says he passed the test; he didn't sleep with Stacey. God says that wasn't the assignment. Marriage is sacred, and people don't take it seriously enough these days. In desperation Bob kidnaps Stacey's husband Randy at his job, takes him home and handcuffs him to a chair. He says now Randy has no choice but to listen to Stacey.
Back at home; Bob is congratulating himself when Donna reminds him that he still hasn't taken time to listen to her problem about choosing a college major. Donna's given up a lot, says Bob, and she's been waiting so long for her turn to come that she's afraid she'll mess things up, pick wrong, and lose her turn. Bob assures her that she can pick again and again. She can have as many turns as she needs.