Declan Desmond, an opinionated British documentary film producer, films a documentary at
Springfield Elementary School on the students' lives. He interviews
Bart as he gets hit by a ball of dirt thrown by
Nelson and breaks down in tears. Later, Declan belittles
Lisa as she talks about the multiplicity of her interests, insinuating that she could neither be happy nor successful juggling too many hobbies or passions. Hurt by his criticism, Lisa resolves to find a single passion to which she can devote herself;
astronomy. She convinces Homer to buy her a
telescope, but discovers that
light pollution from the city is blocking her view of the sky. After a discussion with
Professor Frink, Lisa starts a
petition to reduce the city's light pollution. After gaining enough signatures,
Mayor Quimby agrees to turn off the streetlights, leading to a clear view of the stars, at which many people from Springfield marvel. Meanwhile, Bart is looking for a way to regain his popularity after being humiliated. After seeing
Nelson parading around with stolen car
hood ornaments, he decides to steal one off
Fat Tony's car.
Milhouse and Bart are caught by Fat Tony and his henchmen, and try to escape on a passing streetcar, only for it to stop in front of Tony and his henchmen, which was the line's terminus. As a result, their first attempt failed because Quimby is pressured to switch the lights back on due to rising crime. Yet the light level is set too high which means that no one can sleep so Lisa, still wanting to see the light pollution reduced, and Bart, still wanting to steal Fat Tony's hood ornament, take a now
sleep-deprived Homer to the power plant and overload the generators causing a
power outage, which ends the light pollution, but before the angry citizens can attack, Lisa points out a
meteor shower and the town looks on in wonderment while Bart sneaks off and steals Fat Tony's hood ornament, with
Don McLean's song "
Vincent" playing in the background. The show ends with a montage of clips from Declan's documentary. ==Production==