Ben and Tucker take baby Emma to her first doctor's appointment, and Ben ends up asking her nurse, Cassie (Briana Lane), out on a date. Riley is jealous of Ben's new relationship with Cassie, but tries to befriend her per Ben's request. Meanwhile, Danny has his first hockey game with the New York Rangers and he's very superstitious - he wears an old high school jersey that has never been washed to every game and Bonnie caters to his every ritual. Tucker, in an effort to clean up the apartment, washes Danny's jersey by accident and it shrinks down to a tattered mess - Danny is devastated. At the game, Cassie tells Riley she knows she likes Ben and directly insults her, saying Ben will only ever see her as "Fat Pants." This causes Riley to get into a girl fight with her, which is featured on the jumbotron. Emma was actually wearing Danny's lucky jersey, thanks to Tucker, and now she has become his good luck charm.