During Freedom Day, a day where all citizens are free to do as they please to celebrate the freedom Earth has to offer, Dr Zoidberg eats an Earth flag. Everybody is incensed at his actions and he is put on trial and sentenced to death.
Hearing of Zoidbergs plight, the Decapodians send ships to Earth to enslave the planet to teach them the real meaning of freedom. Zoidberg is unsure what his people are doing is the right thing and assists Fry and Leela to take back the planet. He is hailed a hero for his actions in saving the planet.