Steve teaches everyone how to "Do the Urkel" at Maxine's rooftop party, but the party may be his last when Willie Fuffner spikes the punch with whiskey as revenge for being humiliated. An intoxicated Steve soon tumbles from the rooftop and is clinging for dear life. Rachel ends up risking her life to try to save Steve, while Willie and his pal Waldo end up in juvenile hall. Meanwhile, the Winslows are trying to decide what their one-week vacation will be, and Harriette decides to take Carl's idea to go to Lake Geneva, Wisconsin.