Changing Dynamics is a series of short stories about first time incest, which leads to a change in the dynamics of family. In the first story, a virgin gets a special graduation present from Mom. In the second story, a whore is born. Third story has a married woman's brother creating incestuous videos. Final story has a daughter teasing her Dad until the tables get turned.
Katrina's uncle needed some holiday cheer and she just knew where he could find it. His friend John invited them to their Christmas party. After the party the four of them had their own sexy celebration. Then Katrina smiled and kissed John and said, "I have a feeling nothing is going to be the same after this Christmas"