Plot summary
When Fran offers to hold an Eastern European woman's baby on the subway, she inadvertently "kidnaps" the child when his mother walks off the train without realizing it. The Sheffields think that the woman deliberately abandoned her son, and make plans to care for him—only to get a nasty surprise when Fran is arrested for kidnapping. It seems that things will end badly, until a love of soap operas bonds Fran, the mother, and even the police chief and helps solve the issue.
Credits
Adapted from Wikipedia contributors, The Nanny season 2. HTML formatting and reference markers removed.