When a twenty-something college boy comes home for a visit to meet his Dad's new fiancee, he's prepared for small talk, a nice dinner, and pretending that he has career goals. What he's NOT prepared for is recognizing his Dad's radiant bride-to-be as the woman he's been subscribed to on an "adult" fan site. Awkwardness ensues as the two of them try to navigate family loyalty and an undeniable sexual attraction to one another in "The Stepmother Vol. 18."