Jesse tells Stephanie that she must apologize for going along with her classmates in teasing Walter, a kid who wears eyeglasses, but the apology makes Walter think Stephanie loves him, and when Stephanie's friends come over to the house and see Stephanie talking to Walter, they make Stephanie a target for teasing, until Stephanie turns the tables on them, and shows them how it feels to be teased. Meanwhile, at school, D.J. has been assigned to follow and observe a person for a day, then write an essay about that person. D.J. chooses Michelle to be the subject for the essay, and on ""Wake Up, San Francisco"", Joey fills in for Becky as Danny's co-host while Becky is out of town.

D.J. wants her own phone number because having only one phone number in a house with 5 other people is driving her crazy. D.J. is willing to pay for the new phone number herself, but she needs a way to earn money, so she takes a job babysitting Brian Kagan, a little terror who really takes a toll on her. The guys are having a poker game in Danny's kitchen, and Becky and Jesse can't agree as to where to spend Christmas. Brian ends up getting his head stuck in the railing of the stairs in his house, and Danny leaves the poker game when D.J. calls him about it. Danny helps Brian, and decides to let D.J. have her own phone line because D.J. did the right thing by calling Danny for help when she needed it instead of trying to handle the situation on her own.