Lisa spends the days leading up the Thanksgiving building a centerpiece dedicated to female heroes of American history. In order to make room for more food on the table, Bart accidentally throws Lisa's centerpiece into the fireplace, destroying it. Sent to his room with no Thanksgiving supper, Bart escapes out his window and, with Santa's Little Helper, wanders the city, eventually landing at a homeless shelter where he is filmed by a TV crew. Returning home, Bart apologizes to Lisa for destroying her centerpiece.