An old man and his wife live with their youngest son and his real nice wife. They do so because, as aging seniors, they can no longer afford to live on their own. The old man didn't like the idea at first, but once he got to spend so much time around his son's hot-looking wife, he started to like the idea more and more. The young girl may have been his son's wife and extremely younger, but she still had a body to die for. So, even while having sex with his own wife of 40 years, the horny old man can't help thinking about having sex with well-built Joanie too.