Two film strips illuminated by passages of water: one aboard a ferry crossing the English Channel at day, the other on the banks of the Seine river at night. The soundtrack is generated directly by the projector 'reading' the images shot in Super-16mm.
After Homer accidentally pollutes the town's water supply, Springfield is encased in a gigantic dome by the EPA and the Simpsons are declared fugitives.
The story follows the manhunt for the Zodiac Killer, a serial killer who terrorized the San Francisco Bay Area during the late 1960s and early 1970s, taunting police with letters, bloodstained clothing, and ciphers mailed to newspapers.
By uncovering a world thought only to exist in his imagination, Ethan brings the love of his life back from the dead in order to clear her name and expose the truth behind her apparent suicide.