Mary Beth isn't a wife yet, but a bet to show the other girls that she could be a great wife and mother has her turn to her crush Billy for help. Only Billy isn't thinking straight, after witnessing his neighbours engage in some light spanking and fellatio, he assumes Mary Beth's offer to reward him for his help is much more than she intends.
When it's time to collect, everything comes to light and Billy convinces Mary Beth to go down on him!
Of course, this wouldn't be the Wifely Duties series if the story ended there!
When Billy's parents get home, they don't check on their son (who is hiding in his room, thinking of Mary Beth). Mr. Williams finds out his wife has overspent their budget, and she gets a sound spanking, but given what she spent the money on, he also rewards her.
And finally, when Mary Beth gets home, she can't stop thinking about her first sexual experience with Billy, and hides away in her bedroom to take care of the urges she's suddenly feeling. Her mother on the other hand does her duty and takes good care of her husband. Both ladies have some fun, not knowing what the other is doing under the same roof!
All the erotica fun you expect from the Wifely Duties series, with some new ladies!