After nine months of waiting, Darrin and Samantha welcome their first child. In fact, Darrin is so happy that he even embraces Endora, who for the first time shows emotion as she and Darrin shed a few happy tears together. However, the fun really begins when Darrin meets Sam's lookalike cousin Serena. Unfortunately, Darrin thinks Endora cast a spell on his daughter to cause her to age overnight and he tries to catch Serena, who he thinks is a now adult Tabitha.