Aliens will destroy Earth if they can't see the last episode of an old TV series.
Fry learns the secret ingredient in Slurm while touring the soft drink's factory.
Professor Farnsworth installs an empathy chip in Bender.
As Leela and Lars prepare to get married, we learn what happened to Fry when he returned to the 21st century.
Alien scammers buy the planet and banish its inhabitants to Neptune, leading to an intergalactic battle for Earth.