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.

Tabitha receives her first letter from Darrin's parents Phyllis and Frank, and Samantha and Darrin recall their first visit in an episode long flashback.

Notes: Repeat of "Samantha Meets the Folks" (S1E14). The first 38 seconds of this episode consists of Darrin and Samantha reading and commenting on the letter; the episode then transitions into the flashback of the earlier episode (less the original episode's first 38 seconds, which showed Samantha cleaning the house as Aunt Clara arrived). Apart from replacing that 38 seconds, the episode is identical to the earlier one.