Marlene Sternberg's 42-year-old bachelor son, Robbie, who lives and works hundreds of miles away, fails to call her on her 70th birthday. Several days later she gets a mysterious package from him and before she can open it, he phones and drops a bombshell. He's no longer her son -- he's had a sex-change operation and he's now her daughter. Marlene realizes that her husband, Henry, although a devoted father, is also a conservative old-fashioned guy who will be out of his mind when he gets the news. Why did Robbie have to keep his surgery secret until after the fact? Why was Marlene's younger...