The longest, hottest and most action packed story in the series to date, Part 4 will see Cindy and Dan continue to push the limits of their marriage with old friends and some new ones. Threesomes, foursomes and moresomes. Cindy begins to question the wisdom of testing their vows, while Dan pushes her further and further. You'll come back to the good parts over and over in your private playtime, or during foreplay with your lover.