Lisa Simpson stands in a line of identically dressed kids in grey coveralls on a grassy field, eyes crossed and lips pursed, while a uniformed man…

What happens

Lisa Simpson stands in a line of identically dressed kids in grey coveralls on a grassy field, eyes crossed and lips pursed, while a uniformed man in a blue outfit watches near a tall metal ladder tower with a pulley. The next moment shows an empty field with the zipline cable stretching to a second tower under a bright sun. Bart Simpson, in the grey coveralls, then comes whirling down the zipline head over heels and lands face-first in a hedge. Finally he is shown crouched on a small wooden platform at the top of a post, grinning weakly, with the cable running overhead and wooded hills behind him.

Written by an AI model from frames of this moment, so small details can be off.